Search

Your search keyword '"Njouom, Richard"' showing total 888 results
Start Over Author "Njouom, Richard"
888 results on '"Njouom, Richard"'

51. Epidemiology of rotavirus in humans, animals, and the environment in Africa: a systematic review and meta-analysis

Author

Njifon, Hermann Landry Munshili, primary, Kenmoe, Sebastien, additional, Ahmed, Sharia M, additional, Roussel Takuissu, Guy, additional, Ebogo-Belobo, Jean Thierry, additional, Njile, Daniel Kamga, additional, Bowo-Ngandji, Arnol, additional, Mbaga, Donatien Serge, additional, Kengne-Nde, Cyprien, additional, Mouiche, Mohamed Moctar Mouliom, additional, Njouom, Richard, additional, Perraut, Ronald, additional, and Leung, Daniel T, additional

Published
2023
Full Text
View/download PDF

52. The surge of mpox in Africa: a call for action

Author

Nachega, Jean B, Sam-Agudu, Nadia A, Ogoina, Dimie, Mbala-Kingebeni, Placide, Ntoumi, Francine, Nakouné, Emmanuel, Njouom, Richard, Lewis, Rosamund F, Gandhi, Monica, Rosenthal, Philip J, Rawat, Angeli, Wilson, Lindsay A, Kindrachuk, Jason, Liesenborghs, Laurens, Mills, Edward J, Preiser, Wolfgang, Rimoin, Anne W, Sullivan, Nancy J, Peeters, Martine, Delaporte, Eric, Baxter, Cheryl, Harrison, Lee, Hermans, Michel P, Mohr, Emma L, Gonsalves, Gregg, Ndembi, Nicaise, Zumla, Alimuddin, and Muyembe-Tamfum, Jean Jacques

Published
2024
Full Text
View/download PDF

53. Global prevalence, treatment, and prevention of hepatitis B virus infection in 2016: a modelling study

Author

Razavi-Shearer, Devin, Gamkrelidze, Ivane, Nguyen, Mindie H, Chen, Ding-Shinn, Van Damme, Pierre, Abbas, Zaigham, Abdulla, Maheeba, Abou Rached, Antoine, Adda, Danjuma, Aho, Inka, Akarca, Ulus, Hasan, Fuad, Al Lawati, Faryal, Al Naamani, Khalid, Al-Ashgar, Hamad Ibrahim, Alavian, Seyed M, Alawadhi, Sameer, Albillos, Agustin, Al-Busafi, Said A, Aleman, Soo, Alfaleh, Faleh Z, Aljumah, Abdulrahman A, Anand, Anil C, Anh, Nguyen Thu, Arends, Joop E, Arkkila, Perttu, Athanasakis, Kostas, Bane, Abate, Ben-Ari, Ziv, Berg, Thomas, Bizri, Abdul R, Blach, Sarah, Brandão Mello, Carlos E, Brandon, Samantha M, Bright, Bisi, Bruggmann, Philip, Brunetto, Maurizia, Buti, Maria, Chan, Henry L Y, Chaudhry, Asad, Chien, Rong-Nan, Choi, Moon S, Christensen, Peer B, Chuang, Wan-Long, Chulanov, Vladimir, Clausen, Mette R, Colombo, Massimo, Cornberg, Markus, Cowie, Benjamin, Craxi, Antonio, Croes, Esther A, Cuellar, Diego Alberto, Cunningham, Chris, Desalegn, Hailemichael, Drazilova, Sylvia, Duberg, Ann-Sofi, Egeonu, Steve S, El-Sayed, Manal H, Estes, Chris, Falconer, Karolin, Ferraz, Maria L G, Ferreira, Paulo R, Flisiak, Robert, Frankova, Sona, Gaeta, Giovanni B, García-Samaniego, Javier, Genov, Jordan, Gerstoft, Jan, Goldis, Adrian, Gountas, Ilias, Gray, Richard, Guimarães Pessôa, Mário, Hajarizadeh, Behzad, Hatzakis, Angelos, Hézode, Christophe, Himatt, Sayed M, Hoepelman, Andy, Hrstic, Irena, Hui, Yee-Tak T, Husa, Petr, Jahis, Rohani, Janjua, Naveed Z, Jarčuška, Peter, Jaroszewicz, Jerzy, Kaymakoglu, Sabahattin, Kershenobich, David, Kondili, Loreta A, Konysbekova, Aliya, Krajden, Mel, Kristian, Pavol, Laleman, Wim, Lao, Wai-cheung C, Layden, Jen, Lazarus, Jeffrey V, Lee, Mei-Hsuan, Liakina, Valentina, Lim, Young-Suk S, Loo, Ching-kong K, Lukšić, Boris, Malekzadeh, Reza, Malu, Abraham O, Mamatkulov, Adkhamjon, Manns, Michael, Marinho, Rui T, Maticic, Mojca, Mauss, Stefan, Memon, Muhammad S, Mendes Correa, Maria C, Mendez-Sanchez, Nahum, Merat, Shahin, Metwally, Ammal M, Mohamed, Rosmawati, Mokhbat, Jacques E, Moreno, Christophe, Mossong, Joel, Mourad, Fadi H, Müllhaupt, Beat, Murphy, Kimberly, Musabaev, Erkin, Nawaz, Arif, Nde, Helen M, Negro, Francesco, Nersesov, Alexander, Nguyen, Van Thi Thuy, Njouom, Richard, Ntagirabiri, Renovat, Nurmatov, Zuridin, Obekpa, Solomon, Ocama, Ponsiano, Oguche, Stephen, Omede, Ogu, Omuemu, Casimir, Opare-Sem, Ohene, Opio, Christopher K, Örmeci, Necati, Papatheodoridis, George, Pasini, Ken, Pimenov, Nikolay, Poustchi, Hossein, Quang, Trân D, Qureshi, Huma, Ramji, Alnoor, Razavi-Shearer, Kathryn, Redae, Berhane, Reesink, Henk W, Rios, Cielo Yaneth, Rjaskova, Gabriela, Robbins, Sarah, Roberts, Lewis R, Roberts, Stuart K, Ryder, Stephen D, Safadi, Rifaat, Sagalova, Olga, Salupere, Riina, Sanai, Faisal M, Sanchez-Avila, Juan F, Saraswat, Vivek, Sarrazin, Christoph, Schmelzer, Jonathan D, Schréter, Ivan, Scott, Julia, Seguin-Devaux, Carole, Shah, Samir R, Sharara, Ala I, Sharma, Manik, Shiha, Gamal E, Shin, Tesia, Sievert, William, Sperl, Jan, Stärkel, Peter, Stedman, Catherine, Sypsa, Vana, Tacke, Frank, Tan, Soek S, Tanaka, Junko, Tomasiewicz, Krzysztof, Urbanek, Petr, van der Meer, Adriaan J, Van Vlierberghe, Hans, Vella, Stefano, Vince, Adriana, Waheed, Yasir, Waked, Imam, Walsh, Nicholas, Weis, Nina, Wong, Vincent W, Woodring, Joseph, Yaghi, Cesar, Yang, Hwai-I, Yang, Chung-Lin, Yesmembetov, Kakharman, Yosry, Ayman, Yuen, Man-Fung, Yusuf, Muhammed Aasim M, Zeuzem, Stefan, and Razavi, Homie

Published
2018
Full Text
View/download PDF

54. Contemporary epidemiological data of Rift Valley fever virus in humans, mosquitoes and other animal species in Africa: A systematic review and meta‐analysis

Author

Ebogo‐Belobo, Jean Thierry, primary, Kenmoe, Sebastien, additional, Abanda, Ngu Njei, additional, Bowo‐Ngandji, Arnol, additional, Mbaga, Donatien Serge, additional, Magoudjou‐Pekam, Jeannette Nina, additional, Kame‐Ngasse, Ginette Irma, additional, Tchatchouang, Serges, additional, Menkem, Elisabeth Zeuko'o, additional, Okobalemba, Etienne Atenguena, additional, Noura, Efietngab Atembeh, additional, Meta‐Djomsi, Dowbiss, additional, Maïdadi‐Foudi, Martin, additional, Kenfack‐Zanguim, Josiane, additional, Kenfack‐Momo, Raoul, additional, Kengne‐Nde, Cyprien, additional, Esemu, Seraphine Nkie, additional, Mbacham, Wilfred Fon, additional, Sadeuh‐Mba, Serge Alain, additional, Ndip, Lucy, additional, and Njouom, Richard, additional

Published
2023
Full Text
View/download PDF

55. High concordance of the TaqMan SARS-CoV-2 mutation panel and spike gene sequencing for the detection of SARS-COV-2 Variants Of Concern

Author

Tagnouokam-Ngoupo, Paul Alain, primary, Monamele, Chavely Gwladys, additional, Sadeuh-Mba, Serge Alain, additional, Tchatchueng-Mbougua, Jules Brice, additional, Madaha Longla, Estelle, additional, Abanda, Ngu Njei, additional, Ilouga, Vanessa, additional, Moumbeket Yifomnjou, Moise Henri, additional, Tejiokem, Mathurin Cyrille, additional, Eyangoh, Sara, additional, and Njouom, Richard, additional

Published
2023
Full Text
View/download PDF

56. Arbovirus researchers unite: expanding genomic surveillance for an urgent global need

Author

Wallau, Gabriel Luz, primary, Abanda, Ngu Njei, additional, Abbud, Adriano, additional, Abdella, Saro, additional, Abera, Adugna, additional, Ahuka-Mundeke, Steve, additional, Falconi-Agapito, Francesca, additional, Alagarasu, Kalichamy, additional, Ariën, Kevin K, additional, Ayres, Constancia Flávia Junqueira, additional, Barzon, Luisa, additional, Bonney, Joseph Humphrey Kofi, additional, Boumbaly, Sanaba, additional, Buchy, Philippe, additional, Cao-Lormeau, Van-Mai, additional, Chem, Yu Kie, additional, Cardenas, Paul A, additional, Castillo, Andres E, additional, Delfraro, Adriana, additional, Devine, Gregor, additional, Duong, Veasna, additional, Dupont-Rouzeyrol, Myrielle, additional, Fadeev, Artem V, additional, Fajardo, Alvaro, additional, Diaz, Luis Adrián, additional, Gómez, Lara Ferrero, additional, Gudo, Eduardo Samo, additional, Gutierrez-Bugallo, Gladys, additional, Hapuarachchi, Hapuarachchige Chanditha, additional, Heraud, Jean-Michel, additional, Hibberd, Martin L, additional, Inlamea, Osvaldo Frederico, additional, Jasmin, Nik, additional, Kydyshov, Kalysbek, additional, Kelly, Maria Ezekiely, additional, Khan, Salim, additional, Komissarov, Andrey B, additional, Leaungwutiwong, Pornsawan, additional, Leguia, Mariana, additional, Lustig, Yaniv, additional, Maciel-de-Freitas, Rafael, additional, Malavige, Gathsaurie Neelika, additional, Martinez, Alexander A, additional, Mendoza, Maria L, additional, Mo, Luong T, additional, Moreno, Brechla, additional, Mwasi, Lydia, additional, Naveca, Felipe Gomes, additional, NG, Lee Ching, additional, Njouom, Richard, additional, Nogueira, Mauricio Lacerda, additional, Ntoumi, Francine, additional, Nzoyikorera, Nehemie, additional, Parra, Barbara A, additional, Pichardo, Mauricio Vázquez, additional, Privaldos, Kristine Joy Ragual, additional, Rivero, Ricardo, additional, Rojas, Alejandra María, additional, Salvato, Richard Steiner, additional, Sasmono, R Tedjo, additional, Schmidt-Chanasit, Jonas, additional, Simon-Loriere, Etienne, additional, Sy, Ava Kristy Dy, additional, Talledo-Albujar, Michael, additional, Tizhe, Daniel Thakuma, additional, Toloshovich, Usenbaev Nurbolot, additional, Tran, Vi Thuy, additional, Troupin, Cécile, additional, Kayiwa, John Timothy, additional, van den Hurk, Andrew, additional, Vasilakis, Nikolaos, additional, Weldemariam, Atsbeha Gebreegziabxier, additional, Yacoub, Sophie, additional, Zaini, Zainun, additional, and Wallau, Gabriel Luz, additional

Published
2023
Full Text
View/download PDF

59. Global prevalence and genotype distribution of hepatitis C virus infection in 2015: a modelling study

Author

Blach, Sarah, Zeuzem, Stefan, Manns, Michael, Altraif, Ibrahim, Duberg, Ann-Sofi, Muljono, David H, Waked, Imam, Alavian, Seyed M, Lee, Mei-Hsuan, Negro, Francesco, Abaalkhail, Faisal, Abdou, Ahmed, Abdulla, Maheeba, Rached, Antoine Abou, Aho, Inka, Akarca, Ulus, Al Ghazzawi, Imad, Al Kaabi, Saad, Al Lawati, Faryal, Al Namaani, Khalid, Al Serkal, Youssif, Al-Busafi, Said A, Al-Dabal, Layla, Aleman, Soo, Alghamdi, Abdullah S, Aljumah, Abdulrahman A, Al-Romaihi, Hamad E, Andersson, Monique I, Arendt, Vic, Arkkila, Perttu, Assiri, Abdullah M, Baatarkhuu, Oidov, Bane, Abate, Ben-Ari, Ziv, Bergin, Colm, Bessone, Fernando, Bihl, Florian, Bizri, Abdul R, Blachier, Martin, Blasco, Antonio J, Mello, Carlos E Brandão, Bruggmann, Philip, Brunton, Cheryl R, Calinas, Filipe, Chan, Henry L Y, Chaudhry, Asad, Cheinquer, Hugo, Chen, Chien-Jen, Chien, Rong-Nan, Choi, Moon Seok, Christensen, Peer B, Chuang, Wan-Long, Chulanov, Vladimir, Cisneros, Laura, Clausen, Mette R, Cramp, Matthew E, Craxi, Antonio, Croes, Esther A, Dalgard, Olav, Daruich, Jorge R, de Ledinghen, Victor, Dore, Gregory J, El-Sayed, Manal H, Ergör, Gul, Esmat, Gamal, Estes, Chris, Falconer, Karolin, Farag, Elmoubashar, Ferraz, Maria L G, Ferreira, Paulo R, Flisiak, Robert, Frankova, Sona, Gamkrelidze, Ivane, Gane, Ed, García-Samaniego, Javier, Khan, Amir Ghafoor, Gountas, Ilias, Goldis, Adrian, Gottfredsson, Magnús, Grebely, Jason, Gschwantler, Michael, Pessôa, Mário Guimarães, Gunter, Jessie, Hajarizadeh, Behzad, Hajelssedig, Omer, Hamid, Saeed, Hamoudi, Waseem, Hatzakis, Angelos, Himatt, Sayed M, Hofer, Harald, Hrstic, Irena, Hui, Yee-Tak, Hunyady, Bela, Idilman, Ramazan, Jafri, Wasim, Jahis, Rohani, Janjua, Naveed Z, Jarčuška, Peter, Jeruma, Agita, Jonasson, Jón G, Kamel, Yasser, Kao, Jia-Horng, Kaymakoglu, Sabahattin, Kershenobich, David, Khamis, Jawad, Kim, Young S, Kondili, Loreta, Koutoubi, Zaher, Krajden, Mel, Krarup, Henrik, Lai, Moon-sing, Laleman, Wim, Lao, Wai-cheung, Lavanchy, Daniel, Lázaro, Pablo, Leleu, Henri, Lesi, Olufunmilayo, Lesmana, Laurentius A, Li, Michael, Liakina, Valentina, Lim, Young-Suk, Luksic, Boris, Mahomed, Adam, Maimets, Matti, Makara, Mihály, Malu, Abraham O, Marinho, Rui T, Marotta, Paul, Mauss, Stefan, Memon, Muhammad S, Correa, Maria C Mendes, Mendez-Sanchez, Nahum, Merat, Shahin, Metwally, Ammal M, Mohamed, Rosmawati, Moreno, Christophe, Mourad, Fadi H, Müllhaupt, Beat, Murphy, Kimberly, Nde, Helen, Njouom, Richard, Nonkovic, Diana, Norris, Suzanne, Obekpa, Solomon, Oguche, Stephen, Olafsson, Sigurður, Oltman, Marian, Omede, Ogu, Omuemu, Casimir, Opare-Sem, Ohene, Øvrehus, Anne L H, Owusu-Ofori, Shirley, Oyunsuren, Tsendsuren S, Papatheodoridis, George, Pasini, Ken, Peltekian, Kevork M, Phillips, Richard O, Pimenov, Nikolay, Poustchi, Hossein, Prabdial-Sing, Nishi, Qureshi, Huma, Ramji, Alnoor, Razavi-Shearer, Devin, Razavi-Shearer, Kathryn, Redae, Berhane, Reesink, Henk W, Ridruejo, Ezequiel, Robbins, Sarah, Roberts, Lewis R, Roberts, Stuart K, Rosenberg, William M, Roudot-Thoraval, Françoise, Ryder, Stephen D, Safadi, Rifaat, Sagalova, Olga, Salupere, Riina, Sanai, Faisal M, Avila, Juan F Sanchez, Saraswat, Vivek, Sarmento-Castro, Rui, Sarrazin, Christoph, Schmelzer, Jonathan D, Schréter, Ivan, Seguin-Devaux, Carole, Shah, Samir R, Sharara, Ala I, Sharma, Manik, Shevaldin, Anatoly, Shiha, Gamal E, Sievert, William, Sonderup, Mark, Souliotis, Kyriakos, Speiciene, Danute, Sperl, Jan, Stärkel, Peter, Stauber, Rudolf E, Stedman, Catherine, Struck, Daniel, Su, Tung-Hung, Sypsa, Vana, Tan, Soek-Siam, Tanaka, Junko, Thompson, Alexander J, Tolmane, Ieva, Tomasiewicz, Krzysztof, Valantinas, Jonas, Van Damme, Pierre, van der Meer, Adriaan J, van Thiel, Ingo, Van Vlierberghe, Hans, Vince, Adriana, Vogel, Wolfgang, Wedemeyer, Heiner, Weis, Nina, Wong, Vincent WS, Yaghi, Cesar, Yosry, Ayman, Yuen, Man-fung, Yunihastuti, Evy, Yusuf, Aasim, Zuckerman, Eli, and Razavi, Homie

Published
2017
Full Text
View/download PDF

62. Hepatitis E virus infections among patients with acute febrile jaundice in two regions of Cameroon: First molecular characterization of hepatitis E virus genotype 4.

Author

Modiyinji, Abdou Fatawou, Tankeu, Lange Tchamba Amorgathe, Monamele, Chavely Gwladys, Yifomnjou Moumbeket, Moise Henri, Tagnouokam Ngoupo, Paul Alain, Tchetgna Simo, Huguette, Njei Ngu, Abanda, Mirdad, Kazanji, and Njouom, Richard

Subjects
HEPATITIS E virus, YELLOW fever, JAUNDICE, GENOTYPES, COMMUNICABLE diseases, ANTIBODY titer
Abstract

Background: Febrile jaundice is a common indicator of certain infectious diseases, including hepatitis E. In Cameroon, the yellow fever virus is the only pathogen that is monitored in patients who present with this symptom. However, more than 90% of the samples received as part of this surveillance are negative for yellow fever. This study aimed to describe the prevalence and hepatitis E virus (HEV) genotype among yellow fever-negative patients in the Far North and West regions of Cameroon. Methods: In a cross-sectional study, yellow fever surveillance-negative samples collected between January 2021 and January 2023 were retrospectively analyzed. Anti-HEV IgM and IgG antibodies were tested using commercially available ELISA kits. Anti-HEV IgM and/or IgG positive samples were tested for HEV RNA by real-time RT-PCR, followed by nested RT-PCR, sequencing and phylogenetic analysis. Results: Overall, 121 of the 543 samples (22.3%, 95% CI: 19.0% - 26.0%) were positive for at least one anti-HEV marker. Amongst these, 8.1% (44/543) were positive for anti-HEV IgM, 5.9% (32/543) for anti-HEV IgG, and 8.3% (45/544) for both markers. A total of 15.2% (12/79) samples were positive for HEV RNA real-time RT-PCR and 8 samples were positive for HEV RNA by nested RT-PCR. Phylogenetic analysis showed that the retrieved sequences clustered within HEV genotypes/subtypes 1/1e, 3/3f and 4/4b. Conclusion: Our results showed that HEV is one of the causes of acute febrile jaundice in patients enrolled in the yellow fever surveillance program in two regions of Cameroon. We described the circulation of three HEV genotypes, including two zoonotic genotypes. Further studies will be important to elucidate the transmission routes of these zoonotic HEV genotypes to humans in Cameroon. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

64. Viral etiology of lower respiratory tract infections in adults in the pre‐COVID‐19 pandemic era: A cross‐sectional study in a single center experience from Cameroon

Author

Tchatchouang, Serges, primary, Kenmoe, Sebastien, additional, Nzouankeu, Ariane, additional, Njankouo‐Ripa, Mohamadou, additional, Penlap, Veronique, additional, Donkeng, Valerie, additional, Pefura‐Yone, Eric‐Walter, additional, Fonkoua, Marie‐Christine, additional, Eyangoh, Sara, additional, and Njouom, Richard, additional

Published
2023
Full Text
View/download PDF

65. Neutralization of zoonotic retroviruses by human antibodies: Genotype-specific epitopes within the receptor-binding domain from simian foamy virus

Author

Dynesen, Lasse Toftdal, primary, Fernandez, Ignacio, additional, Coquin, Youna, additional, Delaplace, Manon, additional, Montange, Thomas, additional, Njouom, Richard, additional, Bilounga-Ndongo, Chanceline, additional, Rey, Félix A., additional, Gessain, Antoine, additional, Backovic, Marija, additional, and Buseyne, Florence, additional

Published
2023
Full Text
View/download PDF

66. Detection of Influenza C Virus Infection among Hospitalized Patients, Cameroon

Author

Njouom, Richard, Monamele, Gwladys Chavely, Ermetal, Burcu, Tchatchouang, Serge, Moyo-Tetang, Sylvie, McCauley, John W., and Daniels, Rodney S.

Subjects
Influenza viruses -- Health aspects, Antiviral agents -- Health aspects, Influenza -- Health aspects, Lung diseases -- Health aspects, Hospital patients -- Health aspects, Respiratory tract diseases, Health
Abstract

Four types of influenza viruses are known: A, B, C, and D (1). Unlike influenza viruses types A and B, influenza C viruses generally cause a mild respiratory illness (2). [...]

Published
2019
Full Text
View/download PDF

72. Observed versus estimated actual trend of COVID-19 case numbers in Cameroon: A data-driven modelling

Author

Sandie, Arsène Brunelle, primary, Tejiokem, Mathurin Cyrille, additional, Faye, Cheikh Mbacké, additional, Hamadou, Achta, additional, Abah, Aristide Abah, additional, Mbah, Serge Sadeuh, additional, Tagnouokam-Ngoupo, Paul Alain, additional, Njouom, Richard, additional, Eyangoh, Sara, additional, Abanda, Ngu Karl, additional, Diarra, Maryam, additional, Ben Miled, Slimane, additional, Tchuente, Maurice, additional, and Tchatchueng-Mbougua, Jules Brice, additional

Published
2023
Full Text
View/download PDF

74. HCV Ag quantification as a one-step procedure in diagnosing chronic hepatitis C infection in Cameroon: the ANRS 12336 study

Author

Duchesne, Lea, Njouom, Richard, Lissock, Frederic, Tamko-Mella, Gishlaine Flore, Rallier, Sandrine, Poiteau, Lila, Soulier, Alexandre, Chevaliez, Stephane, Vernet, Guy, Rouveau, Nicolas, Pawlotsky, Jean-Michel, Girard, Pierre-Marie, and Lacombe, Karine

Subjects
Antigens -- Analysis, Hepatitis C -- Health aspects -- Diagnosis -- Research, Health
Abstract

Introduction: The diagnostic procedure for chronic hepatitis C infection (CHC) usually combines anti-HCV antibody (HCV-Ab) and HCV-RNA measurement. Quantifying HCV core antigen (cAg) as a one-step procedure could shorten the diagnostic process. We aimed to assess the performance of cAg quantification in diagnosing CHC and how it is influenced by concomitant HIV or HBV infections. Methods: The cAg was quantified by an automated assay (Abbott Diagnostics) in 465 HCV-Ab negative serum samples and 544 HCV-RNA positive serum samples (n = 1009) collected in patients from the Pasteur Center in Cameroon, some of whom were infected by HBV or HIV. Its performance was evaluated in comparison to the gold standard (ELISA or PCR) by estimating its sensitivity (Se) and specificity (Sp), and by comparing the area under ROC (AUROC) curves in each patient population: HCV mono-infected, HCV-HBV and HIV-HCV co-infected. Results: Among the 465 HCV-Ab negative patients, 51 and 79 were HIV- and HBV-infected, respectively, whereas among the 544 patients with CHC, 27 and 28 were HIV- and HBV-infected, respectively. The Spearman p correlation coefficient between cAg and HCV-RNA was 0.75 (p < 0.00001). The assay had a sensitivity of 95.7% (95% CI: 93.2-97.5) and a specificity of 99.7% (95% CI: 98.1-10) in diagnosing CHC, corresponding to an AUROC of 0.99 (95% CI: 0.98-1.0). Being HIV- or HBV-infected did not impact the performance of cAg (Se = 96.4%, Sp = 96.2% and AUROC = 0.98 (95% CI: 0.95-1.0) in the HBV group, Se = 100%, Sp = 88.2% and AUROC = 0.99 (95% CI: 0.97-1.0) in the HIV group, p between AUROC = 0.69). Conclusions: The cAg quantification displayed a high specificity and sensitivity for the diagnosis of CHC in Cameroon, and its performance was not significantly modified by a concomitant HIV or HBV infection. In the context of CHC elimination on a global scale, using cAg quantification as a screening tool to directly identify CHC could be a reliable tool in a 'test and treat' strategy. Keywords: chronic hepatitis C; HCV core antigen; diagnosis; Sub-Saharan Africa; co-infection; HIV; hepatitis B virus, Introduction Chronic hepatitis C (CHC) affects about 80 million individuals worldwide [1], and in 2013, its complications, namely cirrhosis and liver cancer, have caused over 700,000 deaths [2]. Africa is [...]

Published
2017
Full Text
View/download PDF

75. Retraction

Author

Fischer, Carlo, primary, Maponga, Tongai Gibson, additional, Yadouleton, Anges, additional, Abílio, Nuro, additional, Aboce, Emmanuel, additional, Adewumi, Praise, additional, Afonso, Pedro, additional, Akorli, Jewelna, additional, Andriamandimby, Soa Fy, additional, Anga, Latifa, additional, Ashong, Yvonne, additional, Beloufa, Mohamed Amine, additional, Bensalem, Aicha, additional, Birtles, Richard, additional, Boumba, Anicet Luc Magloire, additional, Bwanga, Freddie, additional, Chaponda, Mike, additional, Chibukira, Paradzai, additional, Chico, R. Matthew, additional, Chileshe, Justin, additional, Chongwe, Gershom, additional, Cissé, Assana, additional, D’Alessandro, Umberto, additional, de Lamballerie, Xavier Nicolas, additional, de Morais, Joana F. M., additional, Derrar, Fawzi, additional, Dia, Ndongo, additional, Diarra, Youssouf, additional, Doumbia, Lassina, additional, Drosten, Christian, additional, Dussart, Philippe, additional, Echodu, Richard, additional, Eggers, Yannik, additional, Eloualid, Abdelmajid, additional, Faye, Ousmane, additional, Feldt, Torsten, additional, Frühauf, Anna, additional, Halatoko, Afiwa, additional, Ilouga, Pauliana-Vanessa, additional, Ismael, Nalia, additional, Jambou, Ronan, additional, Jarju, Sheikh, additional, Kamprad, Antje, additional, Katowa, Ben, additional, Kayiwa, John, additional, King’wara, Leonard, additional, Koita, Ousmane, additional, Lacoste, Vincent, additional, Lagare, Adamou, additional, Landt, Olfert, additional, Lekana-Douki, Sonia Etenna, additional, Lekana-Douki, Jean-Bernard, additional, Iipumbu, Etuhole, additional, Loemba, Hugues, additional, Lutwama, Julius, additional, Mamadou, Santou, additional, Maman, Issaka, additional, Manyisa, Brendon, additional, Martinez, Pedro A., additional, Matoba, Japhet, additional, Mhuulu, Lusia, additional, Moreira-Soto, Andres, additional, Mwangi, Judy, additional, N’dilimabaka, Nadine, additional, Nassuna, Charity Angella, additional, Ndiath, Mamadou Ousmane, additional, Nepolo, Emmanuel, additional, Njouom, Richard, additional, Nourlil, Jalal, additional, Nyanjom, Steven Ger, additional, Odari, Eddy Okoth, additional, Okeng, Alfred, additional, Ouoba, Jean Bienvenue, additional, Owusu, Michael, additional, Donkor, Irene Owusu, additional, Phadu, Karabo Kristen, additional, Phillips, Richard Odame, additional, Preiser, Wolfgang, additional, Ruhanya, Vurayai, additional, Salah, Fortune, additional, Salifou, Sourakatou, additional, Sall, Amadou Alpha, additional, Sylverken, Augustina Angelina, additional, Tagnouokam-Ngoupo, Paul Alain, additional, Tarnagda, Zekiba, additional, Tchikaya, Francis Olivier, additional, Tufa, Tafese Beyene, additional, and Drexler, Jan Felix, additional

Published
2022
Full Text
View/download PDF

76. Gradual emergence followed by exponential spread of the SARS-CoV-2 Omicron variant in Africa

Author

Fischer, Carlo, primary, Maponga, Tongai Gibson, additional, Yadouleton, Anges, additional, Abílio, Nuro, additional, Aboce, Emmanuel, additional, Adewumi, Praise, additional, Afonso, Pedro, additional, Akorli, Jewelna, additional, Andriamandimby, Soa Fy, additional, Anga, Latifa, additional, Ashong, Yvonne, additional, Beloufa, Mohamed Amine, additional, Bensalem, Aicha, additional, Birtles, Richard, additional, Boumba, Anicet Luc Magloire, additional, Bwanga, Freddie, additional, Chaponda, Mike, additional, Chibukira, Paradzai, additional, Chico, R. Matthew, additional, Chileshe, Justin, additional, Chongwe, Gershom, additional, Cissé, Assana, additional, D’Alessandro, Umberto, additional, de Lamballerie, Xavier Nicolas, additional, de Morais, Joana F. M., additional, Derrar, Fawzi, additional, Dia, Ndongo, additional, Diarra, Youssouf, additional, Doumbia, Lassina, additional, Drosten, Christian, additional, Dussart, Philippe, additional, Echodu, Richard, additional, Eggers, Yannik, additional, Eloualid, Abdelmajid, additional, Faye, Ousmane, additional, Feldt, Torsten, additional, Frühauf, Anna, additional, Halatoko, Afiwa, additional, Ilouga, Pauliana-Vanessa, additional, Ismael, Nalia, additional, Jambou, Ronan, additional, Jarju, Sheikh, additional, Kamprad, Antje, additional, Katowa, Ben, additional, Kayiwa, John, additional, King’wara, Leonard, additional, Koita, Ousmane, additional, Lacoste, Vincent, additional, Lagare, Adamou, additional, Landt, Olfert, additional, Lekana-Douki, Sonia Etenna, additional, Lekana-Douki, Jean-Bernard, additional, Iipumbu, Etuhole, additional, Loemba, Hugues, additional, Lutwama, Julius, additional, Mamadou, Santou, additional, Maman, Issaka, additional, Manyisa, Brendon, additional, Martinez, Pedro A., additional, Matoba, Japhet, additional, Mhuulu, Lusia, additional, Moreira-Soto, Andres, additional, Mwangi, Judy, additional, N´dilimabaka, Nadine, additional, Nassuna, Charity Angella, additional, Ndiath, Mamadou Ousmane, additional, Nepolo, Emmanuel, additional, Njouom, Richard, additional, Nourlil, Jalal, additional, Nyanjom, Steven Ger, additional, Odari, Eddy Okoth, additional, Okeng, Alfred, additional, Ouoba, Jean Bienvenue, additional, Owusu, Michael, additional, Owusu Donkor, Irene, additional, Phadu, Karabo Kristen, additional, Phillips, Richard Odame, additional, Preiser, Wolfgang, additional, Ruhanya, Vurayai, additional, Salah, Fortune, additional, Salifou, Sourakatou, additional, Sall, Amadou Alpha, additional, Sylverken, Augustina Angelina, additional, Tagnouokam-Ngoupo, Paul Alain, additional, Tarnagda, Zekiba, additional, Tchikaya, Francis Olivier, additional, Tufa, Tafese Beyene, additional, and Drexler, Jan Felix, additional

Published
2022
Full Text
View/download PDF

77. Neutralization of zoonotic retroviruses by human antibodies: genotype-specific epitopes within the receptor-binding domain from simian foamy virus

Author

Dynesen, Lasse Toftdal, primary, Fernandez, Ignacio, additional, Coquin, Youna, additional, Delaplace, Manon, additional, Montange, Thomas, additional, Njouom, Richard, additional, Bilonga-Ndongo, Chanceline, additional, Rey, Felix A., additional, Gessain, Antoine, additional, Backovic, Marija, additional, and Buseyne, Florence, additional

Published
2022
Full Text
View/download PDF

78. Improving the management and security of COVID 19 diagnostic test data with a digital platform in resource-limited settings: The case of PlaCARD in Cameroon

Author

Tchatchueng-Mbougua, Jules Brice, primary, Messanga Essengue, Loique Landry, additional, Septoh Yuya, Francis Jaudel, additional, Kamtchogom, Vanessa, additional, Hamadou, Achta, additional, Sadeuh-Mbah, Serge Alain, additional, Tagnouokam-Ngoupo, Paul Alain, additional, Tchuente, Maurice, additional, Njouom, Richard, additional, Eyangoh, Sara, additional, and Tejiokem, Mathurin Cyrille, additional

Published
2022
Full Text
View/download PDF

79. First detection of Rift Valley fever virus antibodies in non-human primates in Cameroon.

Author

Ebogo-Belobo, Jean Thierry, Sadeuh-Mba, Serge Alain, Chavely, Gwladys Monamele, Groschup, Martin H., Fon Mbacham, Wilfred, and Njouom, Richard

Subjects
RIFT Valley fever, VIRAL antibodies, PRIMATES, CHIMPANZEES, IMMUNOGLOBULINS, IMMUNOGLOBULIN M
Abstract

We tested for Rift Valley fever virus (RVFV) from at least 15 species of non-human primates. RVFV IgG/IgM antibodies were detected in 3.7% (2 out of 53) of chimpanzees (Pan troglodytes) and in 1.4% (1 out of 72) of unidentified non-human primate species. This study was the first investigation of RVFV in monkeys in Cameroon. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

85. Distribution of influenza virus types by age using case-based global surveillance data from twenty-nine countries, 1999-2014

Author

Caini, Saverio, Spreeuwenberg, Peter, Kusznierz, Gabriela F., Rudi, Juan Manuel, Owen, Rhonda, Pennington, Kate, Wangchuk, Sonam, Gyeltshen, Sonam, Ferreira de Almeida, Walquiria Aparecida, Pessanha Henriques, Cláudio Maierovitch, Njouom, Richard, Vernet, Marie-Astrid, Fasce, Rodrigo A., Andrade, Winston, Yu, Hongjie, Feng, Luzhao, Yang, Juan, Peng, Zhibin, Lara, Jenny, Bruno, Alfredo, de Mora, Doménica, de Lozano, Celina, Zambon, Maria, Pebody, Richard, Castillo, Leticia, Clara, Alexey W., Matute, Maria Luisa, Kosasih, Herman, Nurhayati, Puzelli, Simona, Rizzo, Caterina, Kadjo, Herve A., Daouda, Coulibaly, Kiyanbekova, Lyazzat, Ospanova, Akerke, Mott, Joshua A., Emukule, Gideon O., Heraud, Jean-Michel, Razanajatovo, Norosoa Harline, Barakat, Amal, el Falaki, Fatima, Huang, Sue Q., Lopez, Liza, Balmaseda, Angel, Moreno, Brechla, Rodrigues, Ana Paula, Guiomar, Raquel, Ang, Li Wei, Lee, Vernon Jian Ming, Venter, Marietjie, Cohen, Cheryl, Badur, Selim, Ciblak, Meral A., Mironenko, Alla, Holubka, Olha, Bresee, Joseph, Brammer, Lynnette, Hoang, Phuong Vu Mai, Le, Mai Thi Quynh, Fleming, Douglas, Séblain, Clotilde El-Guerche, Schellevis, François, Paget, John, and Global Influenza B Study group

Published
2018
Full Text
View/download PDF

89. Urgent need for a non-discriminatory and non-stigmatizing nomenclature for monkeypox virus [perspective]

Author

Happi, Christian, Adetifa, Ifedayo, Mbala, Placide, Njouom, Richard, Nakoune, Emmanuel, Happi, Anise, Ndodo, Nnaemeka, Ayansola, Oyeronke, Mboowa, Gerald, Bedford, Trevor, Neher, Richard A, Roemer, Cornelius, Hodcroft, Emma, Tegally, Houriiyah, O'Toole, Áine, Rambaut, Andrew, Pybus, Oliver, Kraemer, Moritz U G, Wilkinson, Eduan, Isidro, Joana, Borges, Vítor, Pinto, Miguel, Gomes, João Paulo, Freitas, Lucas, Resende, Paola C, Lee, Raphael T C, Maurer-Stroh, Sebastian, Baxter, Cheryl, Lessells, Richard, Ogwell, Ahmed E, Kebede, Yenew, Tessema, Sofonias K, and de Oliveira, Tulio

Subjects
360 Social problems & social services, 610 Medicine & health
Abstract

We propose a novel, non-discriminatory classification of monkeypox virus. Together with the World Health Organization, we named three clades (I, IIa and IIb) in order of detection. Within IIb, the cause the current global outbreak, we identified multiple lineages (A.1, A.2, A.1.1 and B.1) to support real-time genomics surveillance.

Published
2022
Full Text
View/download PDF

91. Urgent need for a non-discriminatory and non-stigmatizing nomenclature for monkeypox virus

Author

Happi, Christian, primary, Adetifa, Ifedayo, additional, Mbala, Placide, additional, Njouom, Richard, additional, Nakoune, Emmanuel, additional, Happi, Anise, additional, Ndodo, Nnaemeka, additional, Ayansola, Oyeronke, additional, Mboowa, Gerald, additional, Bedford, Trevor, additional, Neher, Richard A., additional, Roemer, Cornelius, additional, Hodcroft, Emma, additional, Tegally, Houriiyah, additional, O’Toole, Áine, additional, Rambaut, Andrew, additional, Pybus, Oliver, additional, Kraemer, Moritz U. G., additional, Wilkinson, Eduan, additional, Isidro, Joana, additional, Borges, Vítor, additional, Pinto, Miguel, additional, Gomes, João Paulo, additional, Freitas, Lucas, additional, Resende, Paola C., additional, Lee, Raphael T. C., additional, Maurer-Stroh, Sebastian, additional, Baxter, Cheryl, additional, Lessells, Richard, additional, Ogwell, Ahmed E., additional, Kebede, Yenew, additional, Tessema, Sofonias K., additional, and de Oliveira, Tulio, additional

Published
2022
Full Text
View/download PDF

92. Global epidemiology of occult hepatitis B virus infections in blood donors, a systematic review and meta-analysis

Author

Takuissu, Guy Roussel, primary, Kenmoe, Sebastien, additional, Amougou Atsama, Marie, additional, Atenguena Okobalemba, Etienne, additional, Mbaga, Donatien Serge, additional, Ebogo-Belobo, Jean Thierry, additional, Bowo-Ngandji, Arnol, additional, Oyono, Martin Gael, additional, Magoudjou-Pekam, Jeannette Nina, additional, Kame-Ngasse, Ginette Irma, additional, Menkem, Elisabeth Zeuko’o, additional, Selly Ngaloumo, Abdel Aziz, additional, Banlock, Agnès Thierry Rebecca, additional, Feudjio, Alfloditte Flore, additional, Zemnou-Tepap, Cromwel, additional, Meta-Djomsi, Dowbiss, additional, Nyimbe Mviena, Gilberte Louise, additional, Nyebe Eloundou, Ines, additional, Yéngué, Jacqueline Félicité, additional, Kenfack-Zanguim, Josiane, additional, Ndzie Ondigui, Juliette Laure, additional, Zekeng Mekontchou, Ridole Martin, additional, Touangnou-Chamda, Sabine Aimee, additional, Kamtchueng Takeu, Yrene, additional, Taya-Fokou, Jean Bosco, additional, Mbongue Mikangue, Chris Andre, additional, Kenfack-Momo, Raoul, additional, Kengne-Nde, Cyprien, additional, Nkie Esemu, Seraphine, additional, Njouom, Richard, additional, and Ndip, Lucy, additional

Published
2022
Full Text
View/download PDF

93. Unexpected higher convergence of human-great ape enteric viromes in central African forest than in a European zoo: A One Health analysis

Author

Narat, Victor, primary, Salmona, Maud, additional, Kampo, Mamadou, additional, Heyer, Thibaut, additional, Mercier-Delarue, Severine, additional, Ranger, Noémie, additional, Rupp, Stephanie, additional, Ambata, Philippe, additional, Njouom, Richard, additional, Simon, François, additional, Le Goff, Jérôme, additional, and Giles-Vernick, Tamara, additional

Published
2022
Full Text
View/download PDF

94. Epidemiological Evidence of Nosocomial and Zoonotic Transmission of Human T-Cell Leukemia Virus-1 in a Large Survey in a Rural Population of Central Africa

Author

Ramassamy, Jill-Léa, primary, Bilounga Ndongo, Chanceline, additional, Nnuka, Patrick, additional, Antunes, Maëlle, additional, Le Mener, Margot, additional, Betsem a Betsem, Edouard, additional, Njouom, Richard, additional, Cassar, Olivier, additional, Fontanet, Arnaud, additional, and Gessain, Antoine, additional

Published
2022
Full Text
View/download PDF

95. Association between early viral lower respiratory tract infections and subsequent asthma development

Author

Kenmoe, Sebastien, primary, Atenguena Okobalemba, Etienne, additional, Takuissu, Guy Roussel, additional, Ebogo-Belobo, Jean Thierry, additional, Oyono, Martin Gael, additional, Magoudjou-Pekam, Jeannette Nina, additional, Kame-Ngasse, Ginette Irma, additional, Taya-Fokou, Jean Bosco, additional, Mbongue Mikangue, Chris Andre, additional, Kenfack-Momo, Raoul, additional, Mbaga, Donatien Serge, additional, Bowo-Ngandji, Arnol, additional, Kengne-Ndé, Cyprien, additional, Esemu, Seraphine Nkie, additional, Njouom, Richard, additional, and Ndip, Lucy, additional

Published
2022
Full Text
View/download PDF

96. Clinical presentation of COVID-19 at the time of testing and factors associated with pre-symptomatic cases in Cameroon

Author

Tejiokem Mathurin Cyrille, Sadeuh-Mba Serge, Tchatchueng Mbougwa Jules Brice, Tagnouokam Ngoupo Paul Alain, Ngondi Grace, Fokam Joseph, Hamadou Achta, Nke Gisèle, Nwobegahay Julius, Tongo Marcel, Sander Melissa, Ndip Lucy, Perraut Ronald, Okomo Assoumou Marie Claire, Pefura Yone Eric Walter, Etoundi Mballa Georges Alain, Njouom Richard, and Eyangoh Sara

Abstract

To describe the clinical features at time of testing and explore factors associated with SARS-CoV-2 infection and pre-symptomatic cases in Cameroon.Data was collected on people in Cameroon who participated in COVID-19 testing by real-time reverse transcriptase-polymerase chain reaction between 1 March and 5 October 2020. After descriptive analysis, multivariate logistic regression was used to identify factors associated with SARS-CoV-2 infection and pre-symptomatic cases.Of 85 206 test participants, 14 863 (17.4%) were infected with SARS-CoV-2. The median age for cases was 38.4 years (interquartile range 29.6-49.4); 6.1% were aged19 years, and 6.3% were ≥65 years. Of these cases, 46.5% had at least one symptom/sign with a median time from illness onset to testing of 6 days (interquartile range 3-9). Cough (64.2%), headache (46.5%), fatigue/malaise (46.0%), shortness of breath (30.6%) and myalgia/arthralgia (25.6%) were the most commonly observed symptoms/signs. Pre-symptomatic SARS-CoV-2 infection was associated with age50 years, being male and absence of comorbidities.This study provides a comprehensive summary of the early clinical profile of SARS-CoV-2 infection during the first wave of COVID-19 in Cameroon, which was dominated by pre-symptomatic illness. These findings would be helpful for SARS-CoV-2 surveillance and control at a regional level.

Published
2022

97. Delayed 2009 Pandemic Influenza A Virus Subtype H1N1 Circulation in West Africa, May 2009-April 2010

Author

Nzussouo, Ndahwouh Talla, Michalove, Jennifer, Diop, Ousmane M., Njouom, Richard, de Lourdes Monteiro, Maria, Adje, Herve Kadjo, Manoncourt, Serge, Amankwa, Joseph, Koivogui, Lamine, Sow, Samba, Elkory, Mohamed Brahim, Collard, Jean-Marc, Dalhatu, Ibrahim, Niang, Mbayame Ndiaye, Lafond, Kathryn, Moniz, Filomena, Coulibaly, Daouda, Kronman, Karl C., Oyofo, Buhari A., Ampofo, William, Tamboura, Boubou, Bara, Ahmed Ould, Jusot, Jean-François, Ekanem, Ekanem, Sarr, Fatoumata Diène, Hwang, Inzune, Cornelius, Claire, Coker, Babajide, Lindstrom, Stephen, Davis, Richard, Dueger, Erica, Moen, Ann, and Widdowson, Marc-Alain

Published
2012
Full Text
View/download PDF

98. Spatiotemporal Circulation of Influenza Viruses in 5 African Countries During 2008–2009: A Collaborative Study of the Institut Pasteur International Network

Author

Heraud, Jean-Michel, Njouom, Richard, Rousset, Dominique, Kadjo, Herve, Caro, Valerie, Ndiaye, Mbayame Niang, Victoir, Kathleen, Collard, Jean-Marc, Orelle, Arnaud, Yekwa, Elsie Laban, Ekaza, Euloge, Razanajatovo, Norosoa Harline, Adamou, Lagare, Biscornet, Leon, Enouf, Vincent, van der Werf, Sylvie, and Diop, Ousmane Madiagne

Published
2012
Full Text
View/download PDF

100. Epidemiology of hepatitis B virus and/or hepatitis C virus infections among people living with human immunodeficiency virus in Africa: A systematic review and meta-analysis

Author

Kenfack-Momo, Raoul, primary, Kenmoe, Sebastien, additional, Takuissu, Guy Roussel, additional, Ebogo-Belobo, Jean Thierry, additional, Kengne-Ndé, Cyprien, additional, Mbaga, Donatien Serge, additional, Tchatchouang, Serges, additional, Oyono, Martin Gael, additional, Kenfack-Zanguim, Josiane, additional, Lontuo Fogang, Robertine, additional, Mbongue Mikangue, Chris Andre, additional, Zeuko’o Menkem, Elisabeth, additional, Ndzie Ondigui, Juliette Laure, additional, Kame-Ngasse, Ginette Irma, additional, Magoudjou-Pekam, Jeannette Nina, additional, Taya-Fokou, Jean Bosco, additional, Bowo-Ngandji, Arnol, additional, Nkie Esemu, Seraphine, additional, Kamdem Thiomo, Diane, additional, Moundipa Fewou, Paul, additional, Ndip, Lucy, additional, and Njouom, Richard, additional

Published
2022
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results