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1. The global distribution of lymphatic filariasis, 2000–18:a geospatial analysis

Author

Nataliya Foigt, Dina Nur Anggraini Ningrum, Ayenew Negesse Abejie, Samath Dhamminda Dharmaratne, Paramjit Gill, Marcela Agudelo-Botero, Alyssa N. Sbarra, Mario Poljak, Siavash Rahimi, Olalekan A. Uthman, Animut Alebel, Mohsen Naghavi, Olatunji O. Adetokunboh, Maarten J. Postma, Zemichael Gizaw, Chhabi Lal Ranabhat, Leonardo Roever, Mojtaba Bagherzadeh, Smita Pakhale, Seyyed Meysam Mousavi, Morenike Oluwatoyin Folayan, Robert C. Reiner, Phetole Walter Mahasha, Walter Mendoza, Azeem Majeed, Agus Sudaryanto, Dessalegn Ajema Berbada, Kate E. LeGrand, Takeshi Fukumoto, Mehdi Sayyah, Konrad Pesudovs, Mahesh P A, Nihal Thomas, Man Mohan Mehndiratta, Malede Mequanent Sisay, Azadeh Shafieesabet, Muhammad Usman, Balbir Singh, Ahsan Saleem, Ahmed Abualhasan, Maheswar Satpathy, Vijay Kumar Chattu, Mehdi Fazlzadeh, Ali H. Mokdad, Irfan Ullah, Sahar Saeedi Moghaddam, Luca Ronfani, James Albright, Si Si, Bartosz Miazgowski, Moses K. Muriithi, Catalina Liliana Andrei, Isaac Oluwafemi Dipeolu, Brijesh Sathian, Shishay Wahdey Tekelemedhin, Tufa Kolola, Mona M. Khater, Reta Tsegaye Gayesa, Andrew T Olagunju, Achala Upendra Jayatilleke, David L. Smith, Raaj Kishore Biswas, Rosario Cardenas, Andre M. N. Renzaho, Benjamin K. Mayala, Soraya Siabani, Ebrahim Babaee, Tsegaye Lolaso Lenjebo, Miliva Mozaffor, Bolajoko O. Olusanya, Joseph Frostad, Emma Elizabeth Spurlock, Hesham M. Al-Mekhlafi, Aso Mohammad Darwesh, Quynh Anh P. Nguyen, Kebede Embaye Gezae, Junaid Khan, Dessalegn Haile, Marcel Ausloos, David C. Schwebel, Bruno Piassi Sao Jose, Milena Ilic, Ionut Negoi, Ninuk Hariyani, Jost B. Jonas, Dian Kusuma, Sachin R Atre, Goura Kishor Rath, Muhammad Aziz Rahman, Dereje Bayissa Demissie, Eirini Skiadaresi, Simon I. Hay, Preeti Dhillon, Ejaz Ahmad Khan, Mohammad Hasan Imani-Nasab, Gebrehiwot G. Kassa, Nicole Davis Weaver, Mowafa Househ, Soumyadeep Bhaumik, Bahram Armoon, Martin Amogre Ayanore, Shaimaa I. El-Jaafary, Deborah Carvalho Malta, Rufus Adesoji Adedoyin, Alexandria Brown, Zewdie Aderaw Alemu, Mihiretu Kebede, Charles Shey Wiysonge, Bach Xuan Tran, Lal B. Rawal, Kala M. Mehta, Guoqing Hu, Yousef Khader, Heather J. Zar, Shiwei Liu, Norberto Perico, I A Adedeji, Sergio I. Prada, Shai Linn, Saad M.A. Dahlawi, Brigette F. Blacker, Anusha Ganapati Bhat, Desta Haftu Hayelom, Amit Arora, Mohammad Hossein Khosravi, Sanjay Zodpey, Farshad Farzadfar, Mehran Asadi-Aliabadi, Bárbara Niegia Garcia de Goulart, D. R. Mahadeshwara Prasad, Ajay Patle, Daniel Adane Endalew, Jagdish Khubchandani, Sharareh Eskandarieh, Mohammed Ibrahim Mohialdeen Gubari, Derrick A Bennett, Ziad A. Memish, Eduarda Fernandes, Chandrashekhar T Sreeramareddy, Seyed Mohammad Riahi, Hisham Atan Edinur, Taddese Alemu Zerfu, Robert S. Bernstein, Nader Jahanmehr, Yuming Guo, Tomohide Yamada, Manfred Mario Kokou Accrombessi, Mohamed I Hegazy, Liliana Preotescu, Sanjay Basu, Mohammad Reza Sobhiyeh, Frank B. Osei, Adhena Ayaliew Werkneh, Hamideh Salimzadeh, Ali Bijani, Shanshan Li, Alem Girmay, Sonali Kochhar, Meghnath Dhimal, Yonatal Mesfin Tefera, Saravanan Muthupandian, Francesco Saverio Violante, Monika Sawhney, Shally Awasthi, Samer Hamidi, Davide Guido, Van C. Lansingh, Engida Yisma, Muhammad Redzwan S Rashid Ali, Nima Hafezi-Nejad, Sadaf G. Sepanlou, Ali Kiadaliri, Hamed Zandian, Aparna Lal, Diana Fernanda Bejarano Ramirez, Dhirendra N Sinha, Florian Fischer, Hebat Allah Salah A. Yousof, Khanh Bao Tran, Kimberly B. Johnson, Senthilkumar Balakrishnan, Vo Dinh Bay, Arianna Maever L. Amit, Gbenga A. Kayode, John S. Ji, Akhil Soman ThekkePurakkal, Santi Martini, Behzad Heibati, Kebreab Paulos, Tefera Chane Mekonnen, Hagazi Gebre Meles, Vishnu Renjith, Paulina A. Lindstedt, Dinh Toi Chu, Gregory M. Garcia, Ahamarshan Jayaraman Nagarajan, Krishna K. Aryal, Irina Filip, Michelle L. Bell, Manfred S. Green, Alaa Badawi, Daniel Bekele Ketema, Claudio Alberto Dávila-Cervantes, Mohamad-Hani Temsah, Anton Sokhan, Julio Cesar Campuzano Rincon, Navid Manafi, Siddhesh Zadey, Davide Rasella, Hedayat Abbastabar, Manu Raj Mathur, Till Bärnighausen, Paula Moraga, Joan B. Soriano, Victor Adekanmbi, Seid Tiku Mereta, Mehran Shams-Beyranvand, Osayomwanbo Osarenotor, Mahya Beheshti, Farnam Mohebi, Genet Melak Alamene, Andem Effiong, Thomas R. Hird, Colm McAlinden, In-Hwan Oh, Arash Etemadi, Thirunavukkarasu Sathish, Rajesh Sharma, Puja C Rao, Masoud Foroutan, Sangram Kishor Patel, Sheikh Mohammed Shariful Islam, Aniruddha Deshpande, Paul H. Lee, Tukur Dahiru, Chinwe Juliana Iwu, Alireza Rafiei, Somayeh Bohlouli, Juan Sanabria, Javad Nazari, Siamak Sabour, Izza Shahid, Tuomo J. Meretoja, Ireneous N. Soyiri, André Karch, Mehdi Yaseri, Huong Lan Thi Nguyen, Khaled Khatab, Pushpendra Kumar, Ziyad Al-Aly, Khalid A. Altirkawi, Emerito Jose A. Faraon, Hagos Tasew Atalay, Sojib Bin Zaman, Gillian I. Hollerich, Hajer Elkout, Jonathan F. Mosser, Fakher Rahim, Kavumpurathu Raman Thankappan, Benny Antony, Nelson Alvis-Guzman, Ismael R. Campos-Nonato, Mohammad Moradi-Joo, Bineyam Taye, Ghulam Mustafa, Cheru Tesema Leshargie, Jacek Jerzy Jozwiak, Krittika Bhattacharyya, Tariq Jamal Siddiqi, Rafael Alves Guimarães, Vahid Alipour, Themba G. Ginindza, Wubalem Fekadu, Rafael Tabarés-Seisdedos, Mika Shigematsu, Bryan L. Sykes, Gebrekiros Gebremichael Meles, Delia Hendrie, Santosh Varughese, Manasi Kumar, Govinda Prasad Dhungana, Aziz Sheikh, Oladimeji M. Adebayo, Mohsen Bayati, B. Suresh Kumar Shetty, Kinley Wangdi, Hiroshi Yatsuya, Marzieh Nojomi, Carlo La Vecchia, Nuworza Kugbey, Zubair Kabir, Aslam Pervaiz, Muhammed Magdy Abd El Razek, Farzaneh Ghazi Sherbaf, Narinder Pal Singh, Jan Walter De Neve, Mohammad Khazaei, G. K. Mini, Eun-Kee Park, Haileab Fekadu Wolde, Zemenu Tadesse Tessema, Amir Radfar, Syed Ather Hussain, Gebre Teklemariam Demoz, Nasir Salam, Mohammad Ali Mansournia, Babak Moazen, Adnan Kisa, Milena Santric-Milicevic, Mitchell T. Wallin, Doris D. V. Ortega-Altamirano, Anwar Ahmed, Yousef Mohammad, Tanuj Kanchan, Feleke Gebremeskel W, Rajesh Sagar, Marwa Rashad Salem, Michael R.M. Abrigo, Fatemeh Heydarpour, Ammar Albujeer, Yasir Waheed, Noore Alam, Vera Marisa Costa, Rajat Das Gupta, Ritesh G. Menezes, Molly K. Miller-Petrie, Amira Shaheen, Seyyede Masoume Athari, Marcos Roberto Tovani-Palone, Ken Lee Chin, Ghobad Moradi, Ruth W Kimokoti, Peter Njenga Keiyoro, Kirsten E. Wiens, Nikolay Ivanovich Briko, K M Shivakumar, Ziad El-Khatib, Narayan Bahadur Mahotra, Ronny Westerman, Kamarul Imran Musa, Farshad Pourmalek, Kiomars Sharafi, Yared Asmare Aynalem, Entezar Mehrabi Nasab, Mu'awiyyah Babale Sufiyan, D J Christopher, Valery L. Feigin, Harish Chander Gugnani, Mathew M. Baumann, Platon D. Lopukhov, Tewodros Eshete Wonde, Hai Quang Pham, Luis Alberto Cámera, Meghdad Pirsaheb, Nelson J. Alvis-Zakzuk, Ahmad Daryani, Teferi Mekonnen, Yousef Veisani, Sharath Burugina Nagaraja, Parvaiz A Koul, Daniel Diaz, Ali S. Akanda, Mohammad Hifz Ur Rahman, Getachew Mullu Kassa, Daniel J. Weiss, Nauman Khalid, Hassen Mohammed, Edson Serván-Mori, Foad Abd-Allah, Fisaha Haile Tesfay, Abdullah Al Mamun, Yoshan Moodley, Adrian Pana, Salman Rawaf, Amir Almasi-Hashiani, Abdu A. Adamu, Fatemeh Rajati, German Martinez, Habib Benzian, Georgy Lebedev, Ben Lacey, Amir Hasanzadeh, Amir Khater, Merhawi Gebremedhin Tekle, Juanita A. Haagsma, Segun Emmanuel Ibitoye, Ahmed I. Hasaballah, Telma Zahirian Moghadam, Mehdi Hosseinzadeh, Virendra Singh, Demelash Woldeyohannes Handiso, Gabrielle Britton, Tiffany K. Gill, Sezer Kisa, Zahid A. Butt, Bruno Ramos Nascimento, Ian Pollock, Ted R. Miller, Rebecca Ivers, Savita Lasrado, Rovshan Khalilov, Ai Koyanagi, Benn Sartorius, Maciej Banach, Berhe Etsay Tesfay, Hedley Quintana, Joseph Adel Mattar Banoub, Praveen Hoogar, Ehsan Sadeghi, Kedir Hussein Abegaz, Hasan Yusefzadeh, Bogdan Oancea, Vafa Rahimi-Movaghar, Anbissa Muleta Senbeta, Subramanian Senthilkumaran, Ole Frithjof Norheim, Ester Cerin, Zulfiqar A Bhutta, Jennifer Rickard, M Alijanzadeh, Ali Almasi, Erkin M. Mirrakhimov, Seyed Hossein Yahyazadeh Jabbari, Sandra B. Munro, Ambrish Singh, Naohiro Yonemoto, Rahman Shiri, Girmay Teklay Weldesamuel, Jacqueline Elizabeth Alcalde-Rabanal, Daniel Asmelash, Mekdes Tigistu Yilma, Ahmad Ghashghaee, Natalie Maria Cormier, Samiah Alam, Yahya Salimi, Henok Biresaw Netsere, Anh Kim Dang, Jae Il Shin, S. Mohammad Sajadi, Francisco Rogerlândio Martins-Melo, Taweewat Wiangkham, Shankar M Bakkannavar, Eleonora Dubljanin, Itamar S. Santos, Temesgen Yihunie Akalu, Amir Kasaeian, Yahya Safari, Abel Fekadu Fekadu Dadi, Mohammad Fareed, Peter Memiah, Ali Kabir, Ensiyeh Jenabi, Ali Yadollahpour, Josephine W. Ngunjiri, Barthelemy Kuate Defo, Carlos A Castañeda-Orjuela, Reza Malekzadeh, Shymaa Enany, Hamidreza Haririan, Ayman Grada, Amador Goodridge, Salvatore Rubino, Jacob Olusegun Olusanya, Jalal Arabloo, Mohammad Reza Salahshoor, Masoud Behzadifar, Fernando de la Hoz, Mohammed Shannawaz, Hosni Salem, Syed Mohamed Aljunid, G Anil Kumar, Veincent Christian Filipino Pepito, Andre Rodrigues Duraes, Duduzile Ndwandwe, Jasvinder A. Singh, Yuan-Pang Wang, Tissa Wijeratne, Ingan Ukur Tarigan, Giuseppe Remuzzi, Sebastian Vollmer, Rakhi Dandona, Ahmed Abdelalim, Akram Pourshams, Felix Akpojene Ogbo, Alan J Thomson, Yves Miel H Zuniga, Alex Yeshaneh, Birhanu Geta Meharie, Mihajlo Jakovljevic, Obinna Onwujekwe, Ali S. Shalash, Bahram Mohajer, Nefsu Awoke, Hoa Thi Do, Jaifred Christian F. Lopez, Ernoiz Antriyandarti, Yilma Chisha Dea Geramo, Lucas Guimarães Abreu, Mohammad Ali Sahraian, Giang Hai Ha, Nizal Sarrafzadegan, Vinay Nangia, David M. Pigott, Arash Ziapour, Seyed Sina Naghibi Irvani, Andrew S. Azman, Amira Hamed Darwish, MohammadBagher Shamsi, Soewarta Kosen, Degena Bahrey Tadesse, Soufiane Boufous, Mehedi Hasan, Franz Castro, Adauto Martins Soares Filho, Oliver J. Brady, Elizabeth A. Cromwell, Olatunde Aremu, Samad Azari, Hala Rashad Elhabashy, Hamid Yimam Hassen, Julia Moreira Pescarini, Saeed Amini, Mehdi Ahmadi, Andualem Henok, Yafeng Wang, Nevine El Nahas, Paul S. F. Yip, Miguel A Barboza, Ibrahim Abdollahpour, Augustine Mwangi Gatotoh, Gurudatta Naik, Carl Abelardo T. Antonio, Morteza Abdullatif Khafaie, Meysam Behzadifar, hawariat, Enrico Rubagotti, Andre Faro, Kebede Deribe, Bhaskaran Unnikrishnan, Robert L. Thompson, Muhammad Shahdaat Bin Sayeed, Lalit Dandona, Seyyed Shamsadin Athari, Ashish Pathak, Masoud Moradi, Muluken Bekele Sorrie, Vivekanand Jha, Cuong Tat Nguyen, Naser Mohammad Gholi Mezerji, Chabila C Mapoma, Aubrey J. Levine, Solomon Gedlu Nigatu, Keivan Ahmadi, Hailay Abrha Gesesew, Getasew Taddesse Worku, Kewal Krishan, Hany Aref, Alebachew Fasil Fasil, Aziz Eftekhari, Claudiu Herteliu, Wasiq Faraz Rawasia, Zoubida Zaidi, Simin Mouodi, Dawit Zewdu Wondafrash, Hafiz Ansar Rasul Suleria, Oluchi Ezekannagha, Getinet Ayano, Gebremicheal Gebreslassie Kasahun, Usman Iqbal, Andrey Nikolaevich Briko, Workua Mekonnen Metekiya, Chuanhua Yu, Pascual R. Valdez, Mohsen Mazidi, Hamidreza Komaki, Turki Alanzi, Amir Jalali, Mina Anjomshoa, Chukwudi A Nnaji, Mostafa Leili, Hagos Degefa Hidru, Morteza Shamsizadeh, Tomislav Mestrovic, Beatriz Paulina Ayala Quintanilla, Chi Linh Hoang, Jemal Abdu Mohammed, Christopher J L Murray, Reza Shirkoohi, Aditya Prasad Dash, Thomas Pilgrim, Alessandra C. Goulart, Rajeev Gupta, Mustafa Z. Younis, Maha El Tantawi, Maysaa El Sayed Zaki, Aleksandra Barac, Christiane Dolecek, Mohammad Mahdi Zamani, Jean Jacques Noubiap, Faris Lami, Mehdi Naderi, Yunquan Zhang, Babak Eshrati, Jagadish Rao Padubidri, Navid Rabiee, Mayowa O. Owolabi, Netsanet Fentahun, Nuruzzaman Khan, Roghayeh Mohammadibakhsh, Seyed-Mohammad Fereshtehnejad, Serge Resnikoff, Dharmesh Kumar Lal, Habtamu Kebebe Kasaye, Ketema Bizuwork Gebremedhin, Surendra Karki, Edgar Denova-Gutiérrez, Félix Carvalho, Yun Jin Kim, Sonia Lewycka, Rashmi Gupta, Olayinka Stephen Ilesanmi, Neeraj Bedi, Binaya Chalise, Masood Ali Shaikh, Lauren E. Schaeffer, Kerrie E. Doyle, Gianna Gayle Herrera Amul, Richard C. Franklin, Dara K. Mohammad, Naznin Hossain, Jorge Cano, Jai K Das, Ana Isabel Ribeiro, Boris Bikbov, Sameer Vali Gopalani, Mohsen Afarideh, Behnam Heidari, Fares Alahdab, Takahiro Tabuchi, J. Car, Hilton Y. Lam, Diego Augusto Santos Silva, Linda Morales, Brian J. Hall, Mamusha Aman Hussen, Carsten Flohr, Ravi Prakash Jha, Shafiu Mohammed, Tara Ballav Adhikari, Abbas Mosapour, Muktar Beshir Ahmed, Wondimeneh Shibabaw Shiferaw, Mohamed M. Gad, Assefa Desalew, Eugenio Traini, Aisha Elsharkawy, Benjamin Uzochukwu, Anas M. Saad, Mohammad Rabiee, Sivan Yegnanarayana Iyer Saraswathy, Ansariadi Ansariadi, Abdallah M. Samy, Roman Topor-Madry, Afsaneh Arzani, Ayesha Humayun, Michael Tamene Haile, Maryam Khayamzadeh, Farah Daoud, Arash Tehrani-Banihashemi, Public Health, Johnson, KB, Local Burden of Disease 2019 Neglected Tropical Diseases Collaborator, Violante FS, Department of Earth Observation Science, UT-I-ITC-ACQUAL, Faculty of Geo-Information Science and Earth Observation, GeoHealth, and Instituto de Saúde Pública da Universidade do Porto

Subjects
medicine.medical_specialty, Geospatial analysis, 030231 tropical medicine, Elephantiasis, ELIMINATION, computer.software_genre, Article, Local Burden of Disease 2019 Neglected Tropical Diseases Collaborators, 1117 Public Health and Health Services, 03 medical and health sciences, 0302 clinical medicine, RA0421, Environmental health, Global health, medicine, 030212 general & internal medicine, Mass drug administration, Lymphatic filariasis, Public health, lcsh:Public aspects of medicine, Tropical disease, lcsh:RA1-1270, General Medicine, medicine.disease, 3. Good health, QR, Geography, Lymphatic system, ITC-ISI-JOURNAL-ARTICLE, A990 Medicine and Dentistry not elsewhere classified, ITC-GOLD, computer, 0605 Microbiology
Abstract

Background Lymphatic filariasis is a neglected tropical disease that can cause permanent disability through disruption of the lymphatic system. This disease is caused by parasitic filarial worms that are transmitted by mosquitos. Mass drug administration (MDA) of antihelmintics is recommended by WHO to eliminate lymphatic filariasis as a public health problem. This study aims to produce the first geospatial estimates of the global prevalence of lymphatic filariasis infection over time, to quantify progress towards elimination, and to identify geographical variation in distribution of infection. Methods A global dataset of georeferenced surveyed locations was used to model annual 2000–18 lymphatic filariasis prevalence for 73 current or previously endemic countries. We applied Bayesian model-based geostatistics and time series methods to generate spatially continuous estimates of global all-age 2000–18 prevalence of lymphatic filariasis infection mapped at a resolution of 5 km2 and aggregated to estimate total number of individuals infected. Findings We used 14 927 datapoints to fit the geospatial models. An estimated 199 million total individuals (95% uncertainty interval 174–234 million) worldwide were infected with lymphatic filariasis in 2000, with totals for WHO regions ranging from 3·1 million (1·6–5·7 million) in the region of the Americas to 107 million (91–134 million) in the South-East Asia region. By 2018, an estimated 51 million individuals (43–63 million) were infected. Broad declines in prevalence are observed globally, but focal areas in Africa and southeast Asia remain less likely to have attained infection prevalence thresholds proposed to achieve local elimination. Interpretation Although the prevalence of lymphatic filariasis infection has declined since 2000, MDA is still necessary across large populations in Africa and Asia. Our mapped estimates can be used to identify areas where the probability of meeting infection thresholds is low, and when coupled with large uncertainty in the predictions, indicate additional data collection or intervention might be warranted before MDA programmes cease. Funding Bill & Melinda Gates Foundation.

Published
2020
Full Text
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2. Mapping geographical inequalities in access to drinking water and sanitation facilities in low-income and middle-income countries, 2000-17

Author

Joseph Frostad, Eirini Skiadaresi, Mehran Asadi-Aliabadi, Aleksandra Barac, Simon I. Hay, Deborah Carvalho Malta, Achala Upendra Jayatilleke, David L. Smith, Mohamad-Hani Temsah, Brigette F. Blacker, Nuworza Kugbey, Bineyam Taye, Carlo La Vecchia, Kavumpurathu Raman Thankappan, Benny Antony, Cheru Tesema Leshargie, Eduarda Fernandes, Chandrashekhar T Sreeramareddy, Turki Alanzi, Amir Jalali, Chukwudi A Nnaji, Daniel Asmelash, Manu Raj Mathur, Jai K Das, Ana Isabel Ribeiro, Sachin R Atre, Tomislav Mestrovic, Rajeev Gupta, Smita Pakhale, Félix Carvalho, Yun Jin Kim, Quynh Anh P. Nguyen, Sameer Vali Gopalani, Chi Linh Hoang, Jean Jacques Noubiap, Manfred Accrombessi, Christopher J L Murray, Ninuk Hariyani, Ken Lee Chin, Jagadish Rao Padubidri, Mehdi Fazlzadeh, Mohammad Fareed, Mustafa Z. Younis, Navid Rabiee, Osayomwanbo Osarenotor, Brian J. Hall, Ejaz Ahmad Khan, Daniel Diaz, Salman Rawaf, Tara Ballav Adhikari, Mayowa O. Owolabi, Sonia Lewycka, Catalina Liliana Andrei, Henok Biresaw Netsere, Hagos Degefa Hidru, Morteza Shamsizadeh, Shai Linn, Saad M.A. Dahlawi, Demelash Woldeyohannes Handiso, Jemal Abdu Mohammed, Thomas Pilgrim, Alessandra C. Goulart, Ravi Prakash Jha, Norberto Perico, Sergio I. Prada, Ted R. Miller, Rebecca Ivers, Habib Benzian, David C. Schwebel, Milena Ilic, Siddhesh Zadey, Davide Rasella, Hedayat Abbastabar, Aso Mohammad Darwesh, Kinley Wangdi, Ritesh G. Menezes, Jost B. Jonas, Dian Kusuma, Molly K. Miller-Petrie, Savita Lasrado, Goura Kishor Rath, Lalit Dandona, Farshad Farzadfar, Georgy Lebedev, Ahmed I. Hasaballah, Shaimaa I. El-Jaafary, Aniruddha Deshpande, Jacek Jerzy Jozwiak, Joseph Adel Mattar Banoub, Amir Almasi-Hashiani, Praveen Hoogar, Fares Alahdab, Vafa Rahimi-Movaghar, Anbissa Muleta Senbeta, Subramanian Senthilkumaran, Ambrish Singh, Fatemeh Rajati, Sonali Kochhar, Amir Khater, Ali Almasi, Juanita A. Haagsma, Segun Emmanuel Ibitoye, Telma Zahirian Moghadam, Rajesh Sharma, Abel Fekadu Dadi, Sezer Kisa, Arash Etemadi, Zubair Kabir, Aslam Pervaiz, Muhammed Magdy Abd El Razek, Syed Ather Hussain, Mohsen Mazidi, Hamidreza Komaki, Reza Shirkoohi, Alex Yeshaneh, Faris Lami, Maha El Tantawi, Yunquan Zhang, Hamidreza Haririan, Lucas Guimarães Abreu, Tissa Wijeratne, Giuseppe Remuzzi, Bahram Mohajer, Christiane Dolecek, Vinay Nangia, Gebremicheal Gebreslassie Kasahun, Usman Iqbal, Nataliya A. Foigt, Andrey Nikolaevich Briko, Workua Mekonnen Metekiya, Chuanhua Yu, Elizabeth A. Cromwell, Pascual R. Valdez, Jennifer Rickard, Masoud Moradi, Hailay Abrha Gesesew, Naser Mohammad Gholi Mezerji, Getasew Taddesse Worku, Dinh-Toi Chu, Claudiu Herteliu, Dawit Zewdu Wondafrash, Gianna Gayle Herrera Amul, Mostafa Leili, Gebrehiwot G. Kassa, Soumyadeep Bhaumik, Ester Cerin, Bahram Armoon, Martin Amogre Ayanore, Shafiu Mohammed, Alexandria Brown, Charles Shey Wiysonge, Abbas Mosapour, Bach Xuan Tran, Lal B. Rawal, Muktar Beshir Ahmed, Wondimeneh Shibabaw Shiferaw, Mohamed M. Gad, Eugenio Traini, Aisha Elsharkawy, David M. Pigott, Temesgen Yihunie Akalu, Syed Mohamed Aljunid, Reza Malekzadeh, Ahmad Daryani, Olatunde Aremu, Mohammad Reza Salahshoor, Merhawi Gebremedhin Tekle, Derrick A Bennett, Oladimeji M. Adebayo, Bogdan Oancea, Jagdish Khubchandani, Sandra B. Munro, Naohiro Yonemoto, Ahmad Ghashghaee, Mohammed Ibrahim Mohialdeen Gubari, Marcela Agudelo-Botero, Bárbara Niegia Garcia de Goulart, Daniel Adane Endalew, Davide Guido, Alyssa N. Sbarra, Kerrie E. Doyle, Olalekan A. Uthman, Olatunji O. Adetokunboh, Zemichael Gizaw, Muhammad Usman, Farzaneh Ghazi Sherbaf, MohammadBagher Shamsi, Degena Bahrey Tadesse, Aziz Eftekhari, André Karch, Narinder Pal Singh, Carl Abelardo T. Antonio, Morteza Abdullatif Khafaie, Meysam Behzadifar, Amira Hamed Darwish, Soufiane Boufous, Mohammad Reza Sobhiyeh, Frank B. Osei, Adhena Ayaliew Werkneh, Zahid A Butt, Paulina A. Lindstedt, Gregory M. Garcia, Balbir Bagicha Singh, Daniel Bekele Ketema, Genet Melak Alamene, Andem Effiong, André Faro, Amit Arora, Mohammad Hossein Khosravi, Dhirendra N Sinha, Amir Kasaeian, Ali Kabir, Josephine W. Ngunjiri, Hosni Salem, Sharareh Eskandarieh, Akhil Soman ThekkePurakkal, Anwar Ahmed, Tanuj Kanchan, Mu'awiyyah Babale Sufiyan, Bhaskaran Unnikrishnan, Daniel J. Weiss, Ziad El-Khatib, Jorge Cano, Javad Nazari, Ashish Pathak, Krishna Kumar Aryal, Nuruzzaman Khan, Roghayeh Mohammadibakhsh, Seyed-Mohammad Fereshtehnejad, Serge Resnikoff, Dharmesh Kumar Lal, Habtamu Kebebe Kasaye, Harish Chander Gugnani, Ali S. Akanda, Mohammad Hifz Ur Rahman, Muluken Bekele Sorrie, Vivekanand Jha, Abdu A. Adamu, Zulfiqar A. Bhutta, Mohsen Afarideh, Tiffany K. Gill, Nelson Alvis-Guzman, Oliver J. Brady, Ebrahim Babaee, Takahiro Tabuchi, Alebachew Fasil, Anusha Ganapati Bhat, Marwa Rashad Salem, Till Winfried Bärnighausen, Sadaf G. Sepanlou, Paula Moraga, J. Car, Hoa Thi Do, Samad Azari, hawariat, Cuong Tat Nguyen, Michelle L. Bell, Mohamed I Hegazy, Mehedi Hasan, Mamusha Aman Hussen, Erkin M. Mirrakhimov, Seyed Hossein Yahyazadeh Jabbari, Santi Martini, Vishnu Renjith, Haileab Fekadu Wolde, Chabila C Mapoma, Aubrey J. Levine, Solomon Gedlu Nigatu, Hamid Yimam Hassen, Anh Kim Dang, S. Mohammad Sajadi, Francisco Rogerlândio Martins-Melo, Shankar M Bakkannavar, Doris D. V. Ortega-Altamirano, Kala M. Mehta, Boris Bikbov, Assefa Desalew, Carsten Flohr, Yahya Safari, Michael R.M. Abrigo, Mohammad Moradi-Joo, Jan-Walter De Neve, Carlos A Castañeda-Orjuela, Julia Moreira Pescarini, Saeed Amini, Mehdi Ahmadi, Benjamin Uzochukwu, Anas M. Saad, Robert C. Reiner, Ammar Albujeer, Narayan Bahadur Mahotra, Nelson J. Alvis-Zakzuk, Teferi Mekonnen, Lauren E. Schaeffer, Irina Filip, Ali Yadollahpour, Ali Kiadaliri, Hamed Zandian, Fisaha Haile Tesfay, Seyed Mohammad Riahi, Nader Jahanmehr, Yuming Guo, Rafael Tabarés-Seisdedos, Paramjit Gill, Ketema Bizuwork Gebremedhin, Nicole Davis Weaver, Surendra Karki, Masoud Behzadifar, Vo Dinh Bay, Giang Hai Ha, Nizal Sarrafzadegan, In-Hwan Oh, Puja C Rao, Van Charles Lansingh, Kewal Krishan, Hany Aref, Man Mohan Mehndiratta, Shymaa Enany, Ayman Grada, Amador Goodridge, Salvatore Rubino, Zemenu Tadesse Tessema, Maheswar Satpathy, Amir Radfar, Aparna Lal, Isaac Akinkunmi Adedeji, Mehdi Naderi, Siavash Rahimi, Animut Alebel, Mohammad Rabiee, Diana Fernanda Bejarano Ramirez, Sivan Yegnanarayana Iyer Saraswathy, Sojib Bin Zaman, Alem Girmay, Ansariadi Ansariadi, Abdallah M. Samy, Mario Poljak, G Anil Kumar, Beatriz Paulina Ayala Quintanilla, Andrew S. Azman, Ronny Westerman, Thomas R. Hird, Themba G. Ginindza, Babak Moazen, Feleke Gebremeskel W, Meghdad Pirsaheb, Shally Awasthi, Morenike Oluwatoyin Folayan, Roman Topor-Madry, Phetole Walter Mahasha, Kamarul Imran Musa, Hebat Allah Salah A. Yousof, Afsaneh Arzani, Yousef Veisani, Farshad Pourmalek, Sharath Burugina Nagaraja, Ayesha Humayun, Michael Tamene Haile, Kiomars Sharafi, Wasiq Faraz Rawasia, Zoubida Zaidi, Getachew Mullu Kassa, Tsegaye Lolaso Lenjebo, Maryam Khayamzadeh, Nima Hafezi-Nejad, Mohammad Zamani, Takeshi Fukumoto, Masoud Foroutan, Noore Alam, Simin Mouodi, Miliva Mozaffor, Khanh Bao Tran, Farnam Mohebi, Sanjay Basu, Robert L. Thompson, Behzad Heibati, Santosh Varughese, Olayinka Stephen Ilesanmi, Neeraj Bedi, Hafiz Ansar Rasul Suleria, Oluchi Ezekannagha, Gabriel Martinez, Getinet Ayano, Farah Daoud, Konrad Pesudovs, Julio Cesar Campuzano Rincon, Tukur Dahiru, Mehdi Hosseinzadeh, Andualem Henok, Mina Anjomshoa, Rovshan Khalilov, Ai Koyanagi, Raaj Kishore Biswas, Navid Manafi, Yousef Mohammad, Keivan Ahmadi, Seyyed Shamsadin Athari, Binaya Chalise, Masood Ali Shaikh, Joan B. Soriano, Victor Adekanmbi, Seid Tiku Mereta, Delia Hendrie, Vijay Kumar Chattu, Gebrekiros Gebremichael Meles, Si Si, Manasi Kumar, Netsanet Fentahun, Amira Shaheen, Seyyede Masoume Athari, Marcos Roberto Tovani-Palone, Ben Lacey, Peter Njenga Keiyoro, Yared Asmare Aynalem, Entezar Mehrabi Nasab, K M Shivakumar, Tewodros Eshete Wonde, Dessalegn Ajema Berbada, Yahya Salimi, Adnan Kisa, Hisham Atan Edinur, Benn Sartorius, Kate E. LeGrand, Azadeh Shafieesabet, Richard C. Franklin, Dara K. Mohammad, Naznin Hossain, Mona M. Khater, Reta Tsegaye Gayesa, Natalie Maria Cormier, Ghulam Mustafa, Ehsan Sadeghi, Nikolay Ivanovich Briko, Robert S. Bernstein, Samiah Alam, Duduzile Ndwandwe, Andrew T Olagunju, Obinna Onwujekwe, B. Suresh Kumar Shetty, Behnam Heidari, Arianna Maever L. Amit, John S. Ji, Pushpendra Kumar, Sangram Kishor Patel, Vera Marisa Costa, Yafeng Wang, Irfan Ullah, Sahar Saeedi Moghaddam, Virendra Singh, Tufa Kolola, Mehdi Yaseri, Abdullah Al Mamun, Hilton Y. Lam, Diego Augusto Santos Silva, Samath D Dharmaratne, Hajer Elkout, Yoshan Moodley, Linda Morales, Adrian Pana, Nauman Khalid, Hassen Mohammed, Fakher Rahim, Emma Elizabeth Spurlock, Mika Shigematsu, Bryan L. Sykes, Isaac Oluwafemi Dipeolu, Platon D. Lopukhov, Marzieh Nojomi, Khalid A Altirkawi, Dessalegn Haile, Mohsen Bayati, Senthilkumar Balakrishnan, Mohammad Ali Sahraian, Yasir Waheed, Ernoiz Antriyandarti, Tomohide Yamada, Alireza Rafiei, Bruno Ramos Nascimento, Ian Pollock, Ahamarshan Jayaraman Nagarajan, Kebede Embaye Gezae, Anton Sokhan, Mehran Shams-Beyranvand, Junaid Khan, Jacqueline Elizabeth Alcalde-Rabanal, Enrico Rubagotti, Mehran Alijanzadeh, Gillian I. Hollerich, Ismael R. Campos-Nonato, Eleonora Dubljanin, Itamar S. Santos, Wubalem Fekadu, Ole Frithjof Norheim, Florian Fischer, Kedir Hussein Abegaz, Nihal Thomas, Alaa Badawi, Amir Hasanzadeh, Nasir Salam, Muhammad Ali, Mohammad Ali Mansournia, Marcel Ausloos, Ensiyeh Jenabi, Bruno Piassi Sao Jose, Edgar Denova-Gutiérrez, Jae Il Shin, Jacob Olusegun Olusanya, Mohammad Hasan Imani-Nasab, Rajesh Sagar, Ahmed Abdelalim, Benjamin K. Mayala, Fatemeh Heydarpour, Maysaa El Sayed Zaki, Shiwei Liu, Soraya Siabani, Jonathan F. Mosser, Veincent Christian Filipino Pepito, Andre Rodrigues Duraes, Valery L. Feigin, Yuan-Pang Wang, Mathew M. Baumann, Saravanan Muthupandian, Ingan Ukur Tarigan, Jasvinder A. Singh, Sebastian Vollmer, Felix Akpojene Ogbo, Alan J Thomson, Agus Sudaryanto, Birhanu Geta Meharie, Mihajlo Jakovljevic, Ahsan Saleem, Ali S. Shalash, Rakhi Dandona, Mojtaba Bagherzadeh, Ahmed Abualhasan, Muhammad Shahdaat Bin Sayeed, Meghnath Dhimal, Yves Miel H Zuniga, Akram Pourshams, Ionut Negoi, Yilma Chisha Dea Geramo, Franz Castro, Nefsu Awoke, Vahid Alipour, Rosario Cárdenas, Mohammad Khazaei, Mitchell T. Wallin, Yonatal Mesfin Tefera, Sanjay Zodpey, Bolajoko O. Olusanya, Ziad A. Memish, Taddese Alemu Zerfu, Claudio Alberto Dávila-Cervantes, Samer Hamidi, Gbenga A. Kayode, Peter Memiah, Sheikh Mohammed Shariful Islam, Francesco Saverio Violante, Bartosz Miazgowski, Babak Eshrati, Moses K. Muriithi, Mihiretu Kebede, Mowafa Househ, Monika Sawhney, Preeti Dhillon, Desta Haftu Hayelom, Ajay Patle, Thirunavukkarasu Sathish, Krittika Bhattacharyya, Hiroshi Yatsuya, Jaifred Christian F. Lopez, Barthelemy Kuate Defo, Arash Ziapour, Paul H. Lee, Emerito Jose A. Faraon, Seyed Sina Naghibi Irvani, Hagos Tasew Atalay, Tariq Jamal Siddiqi, Rafael Alves Guimarães, Aziz Sheikh, Adauto Martins Soares Filho, Eun-Kee Park, Kirsten E. Wiens, Hai Quang Pham, Berhe Etsay Tesfay, G. K. Mini, Zewdie Aderaw Alemu, Hedley Quintana, Milena Santric-Milicevic, Rajat Das Gupta, Parvaiz A Koul, Edson Serván-Mori, Foad Abd-Allah, Rahul Gupta, Dereje Bayissa Demissie, Chinwe Juliana Iwu, Gabrielle B. Britton, Colm McAlinden, Ayenew Negesse Abejie, Mohsen Naghavi, Maarten J. Postma, Chhabi Lal Ranabhat, Liliana Preotescu, Walter Mendoza, Manfred S. Green, Mahesh P A, Somayeh Bohlouli, Huong Lan Thi Nguyen, Khaled Khatab, Ziyad Al-Aly, Ali H. Mokdad, Aditya P Dash, Andre M. N. Renzaho, Muhammad Aziz Rahman, Ghobad Moradi, Ruth W Kimokoti, Jalal Arabloo, Kimberly B. Johnson, Seyyed Meysam Mousavi, Hesham M. Al-Mekhlafi, D. R. Mahadeshwara Prasad, Rufus A. Adedoyin, Arash Tehrani-Banihashemi, Govinda Prasad Dhungana, Engida Yisma, Azeem Majeed, Dina Nur Anggraini Ningrum, Hagazi Gebre Meles, Hala Elhabashy, Devasahayam J. Christopher, Malede Mequanent Sisay, Juan Sanabria, Gebre Teklemariam Demoz, Leonardo Roever, Shishay Wahdey Tekelemedhin, Guoqing Hu, Yousef Khader, Heather J. Zar, Hamideh Salimzadeh, Ali Bijani, Mehdi Sayyah, Shanshan Li, Kebreab Paulos, Tefera Chane Mekonnen, Mahya Beheshti, Siamak Sabour, Izza Shahid, Tuomo J. Meretoja, Ireneous N. Soyiri, Luca Ronfani, James Albright, Brijesh Sathian, Maciej Banach, Hasan Yusefzadeh, Rahman Shiri, Girmay Teklay Weldesamuel, Mekdes Tigistu Yilma, Taweewat Wiangkham, Soewarta Kosen, Fernando de la Hoz, Mohammed Shannawaz, Luis Camera, Nevine El Nahas, Paul S. F. Yip, Miguel A Barboza, Ibrahim Abdollahpour, Augustine Mwangi Gatotoh, Gurudatta Naik, Kebede Deribe, Real World Studies in PharmacoEpidemiology, -Genetics, -Economics and -Therapy (PEGET), Value, Affordability and Sustainability (VALUE), Microbes in Health and Disease (MHD), Instituto de Saúde Pública da Universidade do Porto, IRAS OH Epidemiology Chemical Agents, Local Burden of Disease WaSH Collaborator, Violante FS, Public Health, Department of Earth Observation Science, UT-I-ITC-ACQUAL, Faculty of Geo-Information Science and Earth Observation, GeoHealth, HUS Comprehensive Cancer Center, Clinicum, University of Helsinki, Department of Oncology, Yisma, Engida, and Local Burden of Disease WaSH Collaborators

Subjects
Drinking water access, Sanitation, Universal design, Geographic Mapping, Socioeconomic Factor, DISEASE, 0302 clinical medicine, RA0421, Hygiene, 11. Sustainability, Global health, 030212 general & internal medicine, media_common, 2. Zero hunger, Public health, lcsh:Public aspects of medicine, 1. No poverty, General Medicine, 3142 Public health care science, environmental and occupational health, 6. Clean water, Low-income countries, 3. Good health, A990 Medicine and Dentistry not elsewhere classified, CHILD GROWTH, TERRITORIES, HYGIENE, Human, 0605 Microbiology, Diarrhea, AFRICA, medicine.medical_specialty, media_common.quotation_subject, 030231 tropical medicine, Local Burden of Disease WaSH Collaborators, Developing country, Article, Geographical inequalities, 1117 Public Health and Health Services, 12. Responsible consumption, Developing Countrie, 03 medical and health sciences, NUTRITIONAL INTERVENTIONS, Environmental health, medicine, SYSTEMATIC ANALYSIS, Humans, QUALITY, Sanitation/statistics & numerical data, Open defecation, Improved sanitation, hand washing, Developing Countries, Models, Statistical, Middle-income countries, Drinking Water, lcsh:RA1-1270, Bayes Theorem, GLOBAL BURDEN, diarrheal disease, DIARRHEA, Diarrhea/epidemiology, Local Burden of Disease WaSH Collaborator, Socioeconomic Factors, 0605 Microbiology, 1117 Public Health and Health Services, ITC-ISI-JOURNAL-ARTICLE, Business, Human medicine, Sanitation facilities, ITC-GOLD
Abstract

Background: Universal access to safe drinking water and sanitation facilities is an essential human right, recognised in the Sustainable Development Goals as crucial for preventing disease and improving human wellbeing. Comprehensive, high-resolution estimates are important to inform progress towards achieving this goal. We aimed to produce highresolution geospatial estimates of access to drinking water and sanitation facilities. Methods: We used a Bayesian geostatistical model and data from 600 sources across more than 88 low-income and middle-income countries (LMICs) to estimate access to drinking water and sanitation facilities on continuous continent-wide surfaces from 2000 to 2017, and aggregated results to policy-relevant administrative units. We estimated mutually exclusive and collectively exhaustive subcategories of facilities for drinking water (piped water on or off premises, other improved facilities, unimproved, and surface water) and sanitation facilities (septic or sewer sanitation, other improved, unimproved, and open defecation) with use of ordinal regression. We also estimated the number of diarrhoeal deaths in children younger than 5 years attributed to unsafe facilities and estimated deaths that were averted by increased access to safe facilities in 2017, and analysed geographical inequality in access within LMICs. Findings: Across LMICs, access to both piped water and improved water overall increased between 2000 and 2017, with progress varying spatially. For piped water, the safest water facility type, access increased from 40·0% (95% uncertainty interval [UI] 39·4–40·7) to 50·3% (50·0–50·5), but was lowest in sub-Saharan Africa, where access to piped water was mostly concentrated in urban centres. Access to both sewer or septic sanitation and improved sanitation overall also increased across all LMICs during the study period. For sewer or septic sanitation, access was 46·3% (95% UI 46·1–46·5) in 2017, compared with 28·7% (28·5–29·0) in 2000. Although some units improved access to the safest drinking water or sanitation facilities since 2000, a large absolute number of people continued to not have access in several units with high access to such facilities (>80%) in 2017. More than 253 000 people did not have access to sewer or septic sanitation facilities in the city of Harare, Zimbabwe, despite 88·6% (95% UI 87·2–89·7) access overall. Many units were able to transition from the least safe facilities in 2000 to safe facilities by 2017; for units in which populations primarily practised open defecation in 2000, 686 (95% UI 664–711) of the 1830 (1797–1863) units transitioned to the use of improved sanitation. Geographical disparities in access to improved water across units decreased in 76·1% (95% UI 71·6–80·7) of countries from 2000 to 2017, and in 53·9% (50·6–59·6) of countries for access to improved sanitation, but remained evident subnationally in most countries in 2017. Interpretation: Our estimates, combined with geospatial trends in diarrhoeal burden, identify where efforts to increase access to safe drinking water and sanitation facilities are most needed. By highlighting areas with successful approaches or in need of targeted interventions, our estimates can enable precision public health to effectively progress towards universal access to safe water and sanitation. This work was primarily supported by a grant from the Gates Foundation (OPP1132415). LGA has received support from Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Finance Code 001), Conselho Nacional de Desenvolvimento Científico e Tecnológico and Fundação de Amparo à Pesquisa do Estado de Minas Gerais. OOA acknowledges the Department of Science and Innovation, National Research Foundation, and DSI/NRF Centre of Excellence for Epidemiological Modelling and Analysis, Stellenbosch, South Africa. SMAl acknowledges the Department of Health Policy and Management, Faculty of Public Health, Kuwait University and International Centre for Casemix and Clinical Coding, Faculty of Medicine, National University of Malaysia for the approval and support to participate in this research project. HTA acknowledges Aksum University. MAu and CH are partly supported by a grant from the Romanian National Authority for Scientific Research and Innovation, CNDS-UEFISCDI, project number PN-III-P4-ID-PCCF-2016-0084. AAz acknowledges funding from the Gates Foundation (OPP1171700). ABad is supported by the Public Health Agency of Canada. TWB was supported by the Alexander von Humboldt Foundation through the Alexander von Humboldt Professor award, funded by the German Federal Ministry of Education and Research; the EU; the Wellcome Trust; and from National Institute of Child Health and Human Development of National Institutes of Health (NIH; R01-HD084233), National Institute on Aging of NIH (P01AG041710), National Institute of Allergy and Infectious Diseases of NIH (R01-AI124389 and R01-AI112339), as well as Fogarty International Center of NIH (D43-TW009775). DABen was supported by the National Institute for Health Research (NIHR) Oxford Biomedical Research Centre. The views expressed are those of the authors and not necessarily those of the National Health Service, the NIHR, or the UK Department of Health and Social Care. GBB is supported by Sistema Nacional de Investigación (SNI) de la Secretaría Nacional de Ciencia, Tecnología e Innovación (SENACYT) of Panamá. FCar acknowledges UID/ MULTI/04378/2019 and UID/QUI/50006/2019 support with funding from FCT/Ministério da Ciência, Tecnologia e Ensino Superior through national funds. VMC acknowledges her grant (SFRH/BHD/110001/2015), received by Portuguese national funds through Fundação para a Ciência e Tecnologia (FCT), IP, under the Norma Transitória DL57/2016/CP1334/CT0006. JDN acknowledges support from the Alexander von Humboldt Foundation. DBD acknowledges support from the Gates Foundation. KD is supported by a Wellcome Trust grant (number 201900/Z/16/Z) as part of his International Intermediate Fellowship. AGo acknowledges Sistema Nacional de Investigadores de Panamá (SNI), Secretaría Nacional de Ciencia, Tecnología e Innovación (SENACYT). CH is partly supported by a grant co-funded by European Fund for Regional Development through the Operational Program for Competitiveness (project ID P_40_382). SMSI is funded by a Fellowship from National Heart Foundation of Australia and Deakin University. MJ and the Serbian part of this GBD contribution was co-funded through grant OI175014 of the Ministry of Education Science and Technological Development of the Republic of Serbia. JK is a recipient of the 2020 Benjamin V Cohen Peace Fellowship from Ball State University Center for Peace and Conflict Studies. YJK’s work was supported by the Research Management Centre, Xiamen University Malaysia, grants number XMUMRF/2018-C2/ ITCM/0001. KKr is supported by a DST PURSE grant and UGC Center of Advanced Study awarded to the Department of Anthropology, Panjab University, Chandigarh, India. BL acknowledges support from the NIHR Oxford Biomedical Research Centre and the British Heart Foundation Centre of Research Excellence, Oxford. PTNM acknowledges the Council for the Development of Social Science Research in Africa. ANA acknowledges Debre Markos University for its support in-terms of office and internet access while reviewing this paper. AMSam received a fellowship from the Egyptian Fulbright Mission programme. MMS-M acknowledges the support of the Ministry of Education, Science and Technological Development of the Republic of Serbia (contract number 175087). AShi acknowledges the support of Health Data Research UK. MRS acknowledges the Clinical Research Development Center of Imam Reza Hospital, Kermanshah university of Medical sciences for their wise advice. JBS is part of Centro de Investigación en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III (ISCIII), Madrid, Spain. RT-S was supported in part by grant PI17/00719 from Instituto de Salud Carlos III–FEDER. BU acknowledges Manipal Academy of Higher Education, Manipal. TWij acknowledges the Migraine Foundation Australia and the Department of Medicine, Faculty of Medicine, University of Rajarata, Saliyapura, Anuradhapuraya, Sri Lanka. CSW was supported by the South African Medical Research Council. SBZ received a scholarship from the Australian Government research training program in support of his academic career.

Published
2020
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3. Variation in Childhood Diarrheal Morbidity and Mortality in Africa, 2000-2015

Author

Scott J. Swartz, David L. Smith, Aaron Osgood-Zimmerman, Puja C Rao, Oliver J. Brady, Aniruddha Deshpande, Nicholas J Kassebaum, Christopher J L Murray, Ian D. Letourneau, Nicholas Graetz, Gregory M. Garcia, Ibrahim A Khalil, David M. Pigott, Robert Reiner, Lucas Earl, Ali H. Mokdad, Samir Bhatt, Jonathan F. Mosser, Jennifer M. Ross, Daniel J. Weiss, Peter W. Gething, Roy Burstein, Moritz U. G. Kraemer, Ian Davis, Sarah E Ray, Simon I. Hay, Brigette F. Blacker, Christopher Troeger, Tamer H. Farag, Daniel C Casey, and Medical Research Council (MRC)

Subjects
Diarrhea, YOUNG-CHILDREN, Sanitation, 030231 tropical medicine, Developing country, Disease, DISEASE, 03 medical and health sciences, 0302 clinical medicine, Medicine, General & Internal, MALARIA, SANITATION, Environmental health, General & Internal Medicine, ROTAVIRUS VACCINATION, medicine, Credible interval, SYSTEMATIC ANALYSIS, Prevalence, Humans, 030212 general & internal medicine, Severe diarrhea, DEVELOPING-COUNTRIES, Geography, Medical, Mortality, 11 Medical and Health Sciences, Science & Technology, PLASMODIUM-FALCIPARUM, business.industry, Incidence (epidemiology), Incidence, Infant, Bayes Theorem, General Medicine, GLOBAL BURDEN, medicine.disease, Child, Preschool, Africa, HEALTH, medicine.symptom, business, Life Sciences & Biomedicine, Malaria
Abstract

BACKGROUND: Diarrheal diseases are the third leading cause of disease and death in children younger than 5 years of age in Africa and were responsible for an estimated 30 million cases of severe diarrhea (95% credible interval, 27 million to 33 million) and 330,000 deaths (95% credible interval, 270,000 to 380,000) in 2015. The development of targeted approaches to address this burden has been hampered by a paucity of comprehensive, fine-scale estimates of diarrhea-related disease and death among and within countries. METHODS: We produced annual estimates of the prevalence and incidence of diarrhea and diarrhea-related mortality with high geographic detail (5 km2) across Africa from 2000 through 2015. Estimates were created with the use of Bayesian geostatistical techniques and were calibrated to the results from the Global Burden of Diseases, Injuries, and Risk Factors Study 2016. RESULTS: The results revealed geographic inequality with regard to diarrhea risk in Africa. Of the estimated 330,000 childhood deaths that were attributable to diarrhea in 2015, more than 50% occurred in 55 of the 782 first-level administrative subdivisions (e.g., states). In 2015, mortality rates among first-level administrative subdivisions in Nigeria differed by up to a factor of 6. The case fatality rates were highly varied at the national level across Africa, with the highest values observed in Benin, Lesotho, Mali, Nigeria, and Sierra Leone. CONCLUSIONS: Our findings showed concentrated areas of diarrheal disease and diarrhea-related death in countries that had a consistently high burden as well as in countries that had considerable national-level reductions in diarrhea burden. (Funded by the Bill and Melinda Gates Foundation.).

Published
2018

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