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192 results on '"Ehrhardt, Derek"'

6. Progress towards poliomyelitis eradication--Pakistan, January 2019-September 2020/Progres accomplis vers l'eradication de la poliomyelite: Pakistan, janvier 2019-septembre 2020

Author

Hsu, Christopher H., Shafiq-ur-Rehman, Muhammad, Bullard, Kelley, Jorba, Jaume, Kader, Milhia, Young, Hamish, Safdar, Muhammad, Jafari, Hamid S., and Ehrhardt, Derek

Subjects
United States. Centers for Disease Control and Prevention, Vaccines, Disease eradication, BCG, Poliomyelitis, Government, Health
Abstract

Afghanistan and Pakistan are the only countries with ongoing transmission of wild poliovirus type 1 (WPV1). (1, 2) In 2019, Pakistan reported 147 cases due to WPV1, 12 times the [...]

Published
2020

7. Progress towards poliomyelitis eradication--Afghanistan, January 2019-July 2020/ Progres accomplis vers Teradication de la poliomyelite--Afghanistan, janvier 2019-juillet 2020

Author

Martinez, Maureen, Akbar, Irfan Elahi, Wadood, Mufti Zubair, Shukla, Hemant, Jorba, Jaume, and Ehrhardt, Derek

Subjects
United States. Centers for Disease Control and Prevention, Disease eradication, Insurgency -- Afghanistan -- Pakistan, Vaccination, COVID-19, Poliomyelitis, Government, Health, World Health Organization
Abstract

Wild poliovirus type 1 (WPV1) is still being transmitted only in Afghanistan and Pakistan. (1) After decreases in the numbers of cases in Afghanistan during 2013-2016, the number increased each [...]

Published
2020

15. Progress towards poliomyelitis eradication --Pakistan, January 2018-September 2019/Progres accomplis vers l'eradication de la poliomyelite: Pakistan, janvier 2018-septembre 2019

Author

Hsu, Christopher, Kader, Milhia, Mahamud, Abdirahman, Bullard, Kelley, Jorba, Jaume, Agbor, John, Safi, Malik Muhammad, Jafari, Hamid S., and Ehrhardt, Derek

Subjects
United States. Centers for Disease Control and Prevention -- Reports, Disease eradication -- Reports, Poliomyelitis -- Reports, Time, Intelligence gathering, Government, Health, World Health Organization -- Reports
Abstract

Afghanistan and Pakistan are the only countries that continue to confirm transmission of wild poliovirus type 1 (WPV1). (1) This report on the status of polio eradication and progress in [...]

Published
2019

16. Progress towards poliomyelitis eradication Afghanistan, January 2018-May 2019/Progres accomplis vers l'eradication de la poliomyelite--Afghanistan, janvier 2018-mai 2019

Author

Martinez, Maureen, Shukla, Hemant, Nikulin, Joanna, Mbaeyi, Chukwuma, Jorba, Jaume, and Ehrhardt, Derek

Subjects
United States. Centers for Disease Control and Prevention -- Reports, Vaccines -- Reports, Disease eradication -- Reports, Vaccination -- Reports, Poliomyelitis -- Reports, Insurgency, Government resistance, Government, Health, World Health Organization -- Reports
Abstract

Since October 2016, Afghanistan and Pakistan have been the only 2 countries to report cases of polio due to wild poliovirus type 1 (WPV1). (1) In Afghanistan, although the number [...]

Published
2019

17. Update on vaccine-derived poliovirus outbreaks-Democratic Republic of the Congo, Horn of Africa, 2017-2018/Le point sur les flambees de poliovirus derives d'une souche vaccinale Republique democratique du Congo, Corne de l'Afrique, 2017-2018

Author

Mbaeyi, Chukwuma, Alleman, Mary M., Ehrhardt, Derek, Wiesen, Eric, Burns, Cara C., Liu, Hongmei, Ewetola, Raimi, Seakamela, Lerato, Mdodo, Rennatus, Ndoutabe, Modjirom, Wenye, Pierre Kandolo, Riziki, Yogolelo, Borus, Peter, Kamugisha, Christopher, and Wassilak, Steven G.F.

Subjects
Congo (Kinshasa) -- Statistics, Northeast Africa -- Statistics, Epidemics -- Statistics -- Africa, Oral poliovirus vaccines -- Complications and side effects, Poliomyelitis -- Statistics, Vaccines, Vaccination, Paralysis, Government, Health
Abstract

Widespread use of live, attenuated (Sabin) oral poliovirus vaccine (OPV) has resulted in marked progress towards global poliomyelitis eradication. (1) In under-immunized populations, however, extensive person-to-person transmission of Sabin poliovirus [...]

Published
2019

22. Progress towards poliomyelitis eradication--Pakistan, January 2017--September 2018/Progres accomplish vers l'eradication de la poliomyelite--Pakistan, janvier 2017--septembre 2018

Author

Hsu, Christopher, Mahamud, Abdirahman, Safdar, Muhammad, Nikulin, Joanna, Jorba, Jaume, Bullard, Kelley, Agbor, John, Kader, Milhia, Sharif, Salmaan, Ahmed, Jamal, and Ehrhardt, Derek

Subjects
Poliomyelitis -- Care and treatment, Immunization -- Usage, Public health -- Analysis, Government, Health
Abstract

Of the 3 wild poliovirus (WPV) serotypes, only type 1 (WPV1) has been detected globally since 2012. Pakistan remains 1 of only 3 countries worldwide (in addition to Afghanistan and [...]

Published
2018

23. Widespread transmission of circulating vaccine-derived poliovirus identified by environmental surveillance and immunization response, Horn of Africa, 2017-2018/Vaste transmission de poliovirus circulants derives d'une souche vaccinale identifiee par la surveillance environnementale et riposte par la vaccination dans la Corne de l'Afrique, 2017-2018

Author

Eboh, Victor A., Makam, Jeevan K., Chitale, Rohit A., Mbaeyi, Chukwuma, Jorba, Jaume, Ehrhardt, Derek, Durry, Elias, Gardner, Tracie, Mohamed, Kamil, Kamugisha, Christopher, Borus, Peter, and Elsayed, Eltayeb Ahmed

Subjects
Polioviruses -- Research, Poliovirus vaccines -- Usage -- Research, Government, Health
Abstract

After declaration of the eradication of wild poliovirus type 2 in 2015, all countries that were using oral poliovirus vaccine (OPV) switched from trivalent OPV (tOPV) (containing types 1, 2 [...]

Published
2018

24. Progress towards poliomyelitis eradication in Afghanistan, January 2017-May 2018/Progres accomplis vers Teradication de la poliomyelite en Afghanistan, janvier 2017-mai 2018

Author

Martinez, Maureen, Shukla, Hemant, Ahmadzai, Maiwand, Nikulin, Joanna, Wadood, Mufti Zubair, Ahmed, Jamal, Mbaeyi, Chukwuma, Jorba, Jaume, and Ehrhardt, Derek

Subjects
Epidemiology -- Analysis, Poliomyelitis -- Care and treatment -- Control -- Research, Government, Health
Abstract

Afghanistan, Nigeria and Pakistan remain the only countries in which transmission of endemic wild poliovirus type 1 (WPV1) continues. (1) This report describes polio eradication activities and progress in and [...]

Published
2018

27. Progress towards poliomyelitis eradication: Pakistan, January 2016-September 2017/Progres accomplis vers l'eradication de la poliomyelite: Pakistan, janvier 2016-septembre 2017

Author

Elhamidi, Youness, Mahamud, Abdirahman, Safdar, Rana Muhammad, Tamimi, Wasan Al, Jorba, Jaume, Mbaeyi, Chukwuma, Hsu, Christopher H., Wadood, Mufti Zubair, Sharif, Salmaan, and Ehrhardt, Derek

Subjects
Infants -- Health aspects, Vaccination -- Health aspects, Poliomyelitis -- Research, Poliovirus vaccines -- Usage -- Health aspects, Government, Health, World Health Organization
Abstract

In 1988, the World Health Assembly launched the Global Polio Eradication Initiative. Of the 3 wild poliovirus serotypes, only wild poliovirus type 1 (WPV1) has been detected since 2012. Since [...]

Published
2017

34. Progress towards poliomyelitis eradication: Afghanistan, January 2015-August 2016/Progres accomplis vers l'eradication de la poliomyelite, Afghanistan, janvier 2015-aout 2016

Author

Mbaeyi, Chukwuma, Shukla, Hemant, Smith, Philip, Tangermann, Rudolf H., Martinez, Maureen, Jorba, Jaume C., Hadler, Stephen, and Ehrhardt, Derek

Subjects
Children -- Health aspects -- 2015 AD, Poliomyelitis vaccine -- Dosage and administration -- 2015 AD, Poliomyelitis -- Care and treatment -- 2015 AD, Government, Health
Abstract

Only 74 cases of wild poliovirus type 1 (WPV1) were reported globally in 2015, a number lower than at any time previously. (1) WPV1 detection in Afghanistan also declined in [...]

Published
2016

35. Spatial analysis of genetic clusters and epidemiologic factors related to wild poliovirus type 1 persistence in Afghanistan and Pakistan

Author

Mendes, Amalia, primary, Whiteman, Ari, additional, Bullard, Kelley, additional, Sharif, Salmaan, additional, Khurshid, Adnan, additional, Alam, Muhammad Masroor, additional, Salman, Muhammad, additional, Ford, Vanessa, additional, Blair, Taisha, additional, Burns, Cara C., additional, Ehrhardt, Derek, additional, Jorba, Jaume, additional, and Hsu, Christopher H., additional

Published
2022
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36. Progress towards poliomyelitis eradication: Pakistan, January 2014-September 2015/Progres accomplis vers l'eradication de la poliomyelite--Pakistan, janvier 2014 septembre 2015

Author

Farag, Noha H., Wadood, Mufti Zubair, Safdar, Rana Muhammad, Ahmed, Nabil, Hamdi, Sabrine, Tangermann, Rudolph H., and Ehrhardt, Derek

Subjects
Epidemics -- Research -- Pakistan, Poliomyelitis -- Demographic aspects -- Care and treatment -- Research, Government, Health
Abstract

Since Nigeria reported its last case of poliomyelitis due to wild poliovirus type 1 (WPV1) in July 2014, the circulation of endemic WPV has been limited to Pakistan and Afghanistan. [...]

Published
2015

37. Progress Toward Poliomyelitis Eradication--Pakistan, January 2019-September 2020

Author

Hsu, Christopher H., Shafiq-ur-Rehman, Muhammad, Bullard, Kelley, Jorba, Jaume, Kader, Milhia, Young, Hamish, Safdar, Muhammad, Jafari, Hamid S., and Ehrhardt, Derek

Subjects
Vaccines, Disease eradication, Health, World Health Organization
Abstract

Pakistan and Afghanistan are the only countries where wild poliovirus type 1 (WPV1) is endemic (1,2). In 2019, Pakistan reported 147 WPV1 cases, approximately 12 times the number reported in [...]

Published
2020

39. Stopping a polio outbreak in the midst of war: Lessons from Syria

Author

Mbaeyi, Chukwuma, primary, Moran, Thomas, additional, Wadood, Zubair, additional, Ather, Fazal, additional, Sykes, Emma, additional, Nikulin, Joanna, additional, Al Safadi, Mohammad, additional, Stehling-Ariza, Tasha, additional, Zomahoun, Laurel, additional, Ismaili, Abdelkarim, additional, Abourshaid, Nidal, additional, Asghar, Humayun, additional, Korukluoglu, Gulay, additional, Duizer, Erwin, additional, Ehrhardt, Derek, additional, Burns, Cara C., additional, and Sharaf, Magdi, additional

Published
2021
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45. Using Nonpolio Enterovirus Detection to Assess the Integrity of Stool Specimens Collected From Acute Flaccid Paralysis Cases in Somalia During 2014–2017.

Author

Hamida, Amen Ben, Ali, Kamil Mohamed, Mdodo, Rennatus, Mohamed, Abdinoor, Mengistu, Kumlachew, Nzunza, Rosemary M, Farag, Noha H, Ehrhardt, Derek T, Elfakki, Eltayeb, and Mbaeyi, Chukwuma

Subjects
ACUTE flaccid paralysis, VIRUS isolation, INTEGRITY, LOGISTIC regression analysis, ODDS ratio
Abstract

Background Despite insecurity challenges in Somalia, key indicators for acute flaccid paralysis (AFP) surveillance have met recommended targets. However, recent outbreaks of vaccine-derived polioviruses have raised concerns about possible gaps. We analyzed nonpolio enterovirus (NPEV) and Sabin poliovirus isolation rates to investigate whether comparing these rates can inform about the integrity of stool specimens from inaccessible areas and the likelihood of detecting circulating polioviruses. Methods Using logistic regression, we analyzed case-based AFP surveillance data for 1348 cases with onset during 2014−2017. We assessed the adjusted impacts of variables including age, accessibility, and Sabin-like virus isolation on NPEV detection. Results NPEVs were more likely to be isolated from AFP case patients reported from inaccessible areas than accessible areas (23% vs 15%; P =.01). In a multivariable model, inaccessibility and detection of Sabin-like virus were positively associated with NPEV detection (adjusted odds ratio [AOR], 1.75; 95% confidence interval [CI], 1.14–2.65; and AOR, 1.79; 95% CI, 1.07–2.90; respectively), while being aged ≥5 years was negatively associated (AOR, 0.42; 95% CI, 0.20–0.85). Conclusions Rates of NPEV and Sabin poliovirus detection in inaccessible areas suggest that the integrity of fecal specimens tested for AFP surveillance in Somalia can generate useful AFP data, but uncertainties remain about surveillance system quality. [ABSTRACT FROM AUTHOR]

Published
2020
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47. Notes from the Field: Widespread Transmission of Circulating Vaccine-Derived Poliovirus Identified by Environmental Surveillance and Immunization Response — Horn of Africa, 2017–2018

Author

Eboh, Victor A., primary, Makam, Jeevan K., additional, Chitale, Rohit A., additional, Mbaeyi, Chukwuma, additional, Jorba, Jaume, additional, Ehrhardt, Derek, additional, Durry, Elias, additional, Gardner, Tracie, additional, Mohamed, Kamil, additional, Kamugisha, Christopher, additional, Borus, Peter, additional, and Elsayed, Eltayeb Ahmed, additional

Published
2018
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48. Modeling Poliovirus Transmission in Pakistan and Afghanistan to Inform Vaccination Strategies in Undervaccinated Subpopulations

Author

Duintjer Tebbens, Radboud J., primary, Pallansch, Mark A., additional, Cochi, Stephen L., additional, Ehrhardt, Derek T., additional, Farag, Noha H., additional, Hadler, Stephen C., additional, Hampton, Lee M., additional, Martinez, Maureen, additional, Wassilak, Steve G.F., additional, and Thompson, Kimberly M., additional

Published
2018
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