Gestion optimisée des intrants pour une réponse efficace en contexte de pandémie au Cameroun
Joseph Fokam1,2,3,4 Cyrille Alain Abega Abega1 Ezechiel Ngoufack Jagni Semengue1 Aissatou Abba1 Désiré Takou1 Grace Angong Beloumou1 Sandrine Claire Djupsa Ndjeyep1 Alex Durand Nka1 Davy-Hyacinthe Anguechia Gouissi1,5 Derrick Ayuk Ngwese Tambe1,5 Chenwi Collins1,6 Aude Christelle Ka’e1 Michel Carlos Tommo Tchouaket1 Rachel Audrey Nayang Mundo1 Aurelie Minelle Kengni Ngueko1,6 Naomi-Karell Etame1 Larissa Gaelle F. Moko1,5 Evariste Molimbou1,3,6 Willy Leroi Togna Pabo1,7,8 Pamela Patricia Tueguem1 Nadine Fainguem1 Lionele F. Mba1 Laeticia Grace Yatchou1 Nafissatou Ibnou9 Thaddée Bienvenu Onana10 Yap Boum II10,11 Alain Georges Etoundi Mballa12 Alexis Ndjolo1,5
Viral dynamics and factors associated with duration of COVID‑19 positivity: evidence from the first‑three epidemiological waves in Cameroon
Joseph Fokam1,2,3,4*, Aurelie Minelle Kengni Ngueko1,4,5*†, Alex Durand Nka1,5,6†, Collins Ambe Chenwi1,5†, Ezechiel Ngoufack Jagni Semengue1,5,6, Yagai Bouba1,5,7, Désiré Takou1, Nadine Fainguem1, Michel Carlos Tommo Tchouaket1,4, Aude Christelle Ka’e1,5, Grace Angong Beloumou1, Sandrine Claire Djupsa Ndjeyep1, Willy Leroi Togna Pabo1,2, Davy‑Hyacinthe Gouissi Anguechia1, Naomi‑Karell Etame1,4, Evariste Molimbou1,6, Rachel Audrey Nayang Mundo1, Aissatou Abba1, Samuel Martin Sosso1, John Otshudiema Otokoye8, Christian Ngongang Ouankou9, Claudia Alteri10,11, Luna Colagrossi11, Maria‑Mercedes Santoro5, Francesca Ceccherini‑Silberstein5, Yap Boum II3,13, Edie Gregory Halle Ekane2, Alfred K. Njamnshi12, Vittorio Colizzi1,5,6, Nicaise Ndembi14†, Alexis Ndjolo1† and Carlo‑Federico Perno11
Disparities in anti-SARS-CoV-2 reactivity according to vaccines administered in the era of omicron in Cameroon: Lessons for future outbreak response
Ezechiel Ngoufack Jagni Semengue 1, Desire Takou1, Marina Potesta2, Sandrine Claire Ndjeyep Djupsa1, Carla Montesano2,3, Collins Ambes Chenwi1,4, Grace Beloumou1, Alex Durand Nka1, Aurelie Minelle Kengni Ngueko1,4, Evariste Molimbou1,3,4, Naomi-Karell Etame1,5, Davy-Hyacinthe Gouissi Anguechia1,5, Audrey Rachel Mundo Nayang1, Pamela Patricia Tueguem1, Therese Ndomgue1,2, Derrick Tambe Ayuk Ngwese1,5, Larissa Gaëlle Moko Fotso1,5, Carlos Michel Tommo Tchouaket1,6, Aude Christelle Ka’e1,4, Nadine Fainguem1, Cyrille Alain Abega Abega1, Nadia Mandeng7,8,9, Emilienne Epee5,8,9, Linda Esso8,9, Georges Etoundi Mballa8,9, Maria Mercedes Santoro4, Anne-Cecile Z-K Bissek10, John Otokoye Otshudiema11, Claudia Alteri12, Yap Boum II5,8,9, Anne-Geneviève Marcelin13, Francesca Ceccherini-Silberstein4, Alexis Ndjolo1,5, Carlo-Federico Perno1,14, Jean Kaseya15, Vittorio Colizzi 1,3☯, Nicaise Ndembi15,16☯*, Joseph Fokam 1,8,17☯*
COVID-19 preventive social-behavioural practices and exposure to SARS-CoV-2 among residents in the city of Yaounde: Lessons from the early phase of the pandemic in Cameroon
Joseph Fokam1,2,3*, Alex Durand NkaID 1*, Jeremiah Efakika Gabisa1, Kene Nwosu4, Franck Wanda5, Lucien Mama6, Aude Christelle Ka’e1, Yagai Bouba1,7, Ezechiel Ngoufack Jagni Semengue1, Michel Carlos Tommo Tchouaket1, De´sire´ Takou1, Aurelie minelle Kengni Ngueko1, Willy PaboID 1, Samuel Martin Sosso1, Olivia Keiser3, Carlo- Federico Perno1,8, Vittorio Colizzi1,9, Edie-Gregory Halle Ekane2, John Otshudiema Otokoye10, Alexis Ndjolo1, Laura CiaffiID 5
Pre-existing immunity to SARSCoV- 2 before the COVID-19 pandemic era in Cameroon: A comparative analysis according to HIV-status
Abba Aissatou1,2*†, Joseph Fokam1,3,4,5*†, Ezechiel Ngoufack Jagni Semengue1,6,7, De´ sire´ Takou1, Aude Christelle Ka’e1,6, Collins Chenwi Ambe1,8, Alex Durand Nka1,6,7, Sandrine Claire Djupsa1, Graˆce Beloumou1, Laura Ciaffi9, Michel Carlos Tommo Tchouaket1,10, Audrey Rachel Mundo Nayang1, Willy Leroi Togna Pabo1, Rene´ Ghislain Essomba4,5,11, Edie G. E. Halle3, Marie-Claire Okomo4,5,11, Anne-Cecile ZK. Bissek12, Rose Leke1,13, Yap BoumII4, Georges Alain Etoundi Mballa4,14, Carla Montesano6, Carlo-Federico Perno15, Vittorio Colizzi1,6,7 and Alexis Ndjolo1,5
Genomic surveillance of SARS‑CoV‑2 reveals highest severity and mortality of delta over other variants: evidence from Cameroon
Joseph Fokam 1,2,3,4,27*, Rene Ghislain Essomba 2,5,6,27, Richard Njouom 2,7,27, Marie‑Claire A. Okomo 2,5,6,27, Sara Eyangoh 2,7,27, Celestin Godwe 8,27, Bryan Tegomoh 9, John O. Otshudiema 10, Julius Nwobegahay 2,11, Lucy Ndip 4, Blaise Akenji 5, Desire Takou 3, Mohamed M. M. Moctar 12, Cleophas Kahtita Mbah 12, Valantine Ngum Ndze 4,13, Martin Maidadi‑Foudi 8, Charles Kouanfack 8, Sandrine Tonmeu 5, Dorine Ngono 9, John Nkengasong 14, Nicaise Ndembi 14, Anne‑Cecile Z. K. Bissek 4,15, Christian Mouangue 1,16, Chanceline B. Ndongo 1,16,17, Emilienne Epée 1,6,16, Nadia Mandeng 1,16,18, Sandrine Kamso Belinga 1,16, Ahidjo Ayouba 19, Nicolas Fernandez 19, Marcel Tongo 8, Vittorio Colizzi 3,20, Gregory‑Edie Halle‑Ekane 4, Carlo‑Federico Perno 3,21, Alexis Ndjolo 3,6, Clement B. Ndongmo 22, Judith Shang 22*, Linda Esso 1,16, Oliviera de‑Tulio 23, Moussa Moise Diagne 24, Yap Boum II 1,6,25,28, Georges A. E. Mballa 1,6,16,28, Louis R. Njock 2,6,17,26,28 & Genomic Surveillance Study Group *
XBB.1, BQ1.1 and atypical BA.4.6/XBB.1 recombinants predominate current SARS-CoV-2 Wavelets with flu-like symptoms in Cameroon: A snapshot from genomic surveillance
Joseph Fokam1,2,3,4*, Ezechiel Ngoufack Jagni SemengueID 1☯, Davy-Hyacinthe Gouissi Anguechia1,5☯, Naomi-Karell Etame1,5☯, De´sire´ Takou1☯, Nadia Mandeng3,6, Minelle Aurelie Kengni Ngueko1,7, Grace Beloumou Angong1, Sandrine Djupsa Ndjeyep1, Collins Chenwi Ambe1,7, Alex Durand Nka1, Evariste Molimbou1,7,8, Audrey Rachel Mundo Nayang1, Larissa Gae¨ lle Moko Fotso1,5, Derrick Tambe Ayuk NgweseID 1,5, Pamela Patricia Tueguem1, Carlos Michel Tommo Tchouaket1,9, Aude Christelle Ka’e1,7, Nadine Fainguem1, Cyrille Abega Abega1, Edie-Gregory Halle-Ekane2, Linda Esso3,10, Alain Georges Etoundi Mballa3,10, Judith Shang11, Clement B. Ndongmo11, Giulia Cappelli12, Sofonias Kifle Tessema13, Anne-Cecile Z-K Bissek14, Vittorio Colizzi1,7,8, Alexis Ndjolo1,7, Carlo-Federico Perno1,15‡, Nicaise Ndembi13‡
SARS-CoV-2 genomic surveillance and reliability of PCR single point mutation assay (SNPsig® SARS-CoV-2 EscapePLEX CE) for the rapid detection of variants of concern in Cameroon
Joseph Fokam a,b,c,d,e,*, Davy-Hyacinthe Gouissi Anguechia a,d, Desire Takou a, Ezechiel Ngoufack Jagni Semengue a,f,g, Collins Chenwi a,h, Grace Beloumou a, Sandrine Djupsa a, Alex Durand Nka a,f,g, Willy Le Roi Togna Pabo a, Aissatou Abba a, Aude Christelle Ka’e a,f, Aurelie Kengni a, Naomi Karell Etame a, Larissa Gaelle Moko a,d, Evariste Molimbou a,g, Rachel Audrey Nayang Mundo a, Michel Tommo a, Nadine Fainguem a,f,g, Lionele Mba Fotsing a, Luna Colagrossi i, Claudia Alteri j, Dorine Ngono k, John Otokoye Otshudiema k, Clement Ndongmo l, Yap Boum c, Georges Mballa Etoundi c, Edie G.E. Halle b, Emmanuel Eben-Moussi a, Carla Montesano f, Anne-Genevieve Marcelin m, Vittorio Colizzi a,f, Carlo-Federico Perno i, Alexis Ndjolo a,b, Nicaise Ndembi n
Performance characteristics of INDICAID antigen rapid diagnostic test on SARS-CoV-2 samples during the omicron wave in Cameroon
Joseph Fokam a,b,c,d,*,1, D´esir´e Takou a,1, Ezechiel Ngoufack Jagni Semengue a,2, Evariste Molimbou a,e,f,2, Collins Chenwi Ambe a,e,2, Alex Durand Nka a, Sandrine Djupsa Ndjeyep a, Grace Angong Beloumou a, Christelle Aude Ka’e a,e, Davy- Hyacinthe Gouissi Anguechia a,d, Audrey Rachel Mundo Nayang a, Larissa Ga¨elle Moko Fotso a,d, Aurelie Minelle Kengni Ngueko a,e, Naomi-Karell Etame a,d, Pamela Patricia Tueguem a, Carlos Michel Tommo Tchouaket a,g, Nadine Fainguem a, Cyrille Abega Abega a, Aissatou Abba a,h, Derrick Tambe Ayuk Ngwese a,d, Rina Djubgang Djoukwe i, Blaise Akenji j, Marie-Claire Okomo Assoumou d,j, Nadia Mandeng c,k,l, Linda Esso c,l, Giulia Cappelli a,m, Judith Shang n, Clement Ndongmo n, Georges Alain Etoundi Mballa c,l, Nicaise Ndembi o, Vittorio Colizzi a,e,f, Carlo-Federico Perno p, Alexis Ndjolo a,d
Diagnostic performance of molecular and serological tests of SARS-CoV-2 on well- characterised specimens from COVID-19 individuals: The EDCTP "PERFECT-study" protocol (RIA2020EF-3000)
Joseph Fokam 1,2,3,4, Claudia Alteri5,6, Luna Colagrossi7, Anne-Marie Genevieve8, Désiré Takou1, Alexis Ndjolo1,4, Vittorio Colizzi1,9,10, Nicaise Ndembi11, Carlo- Federico Perno1,7
Epidemiological, virological and clinical features of SARS-CoV-2 among individuals during the first wave in Cameroon: Baseline analysis for the EDCTP PERFECT-Study RIA2020EF-3000
Joseph Fokam,corresponding author 1-3 Désiré Takou, 1 Alex Durand Nka, 1 , 4 , 5 Aude Christelle Ka’e, 1 , 4 , 5 Bouba Yagai, 1 , 4 Collins Ambe Chenwi, 1 , 3 Ezechiel Ngoufack Jagni Semengue, 1 , 4 , 5 Grâce Angong Beloumou, 1 Sandrine Claire Djupsa Ndjeyep, 1 Aissatou Abba, 1 Willy Pabo, 1 Davy Gouissi, 1 Michel Carlos Tommo Tchouaket, 1 Laeticia Yatchou, 1 Krystel Zam, 1 Lucien Mama, 6 Regine Claudette Ekitti, 7 Nadine Fainguem, 1 , 4 , 5 Rachel Kamgaing, 1 Samuel Martin Sosso, 1 Nicaise Ndembi, 8 Vittorio Colizzi, 1 , 4 , 5 Carlo-Federico Perno, 1 , 9 and Alexis Ndjolo 1 , 3
High concordance in SARSCoV-2 detection between automated ( Abbott m2000) and manual ( DaAn gene) RT-PCR systems: The EDCTP PERFECT-Study in Cameroon
Nadine Nguendjoung Fainguem, 1 , 2 , 3 Joseph Fokam, 1 , 4-6 Ezechiel Ngoufack Jagni Semengue, 1 , 2 , 3 Alex Durand Nka, 1 , 2 , 3 Désiré Takou, 1 , 2 Joshua Ageboh Nkembi-leke, 4 Claudia Alteri, 7 Luna Colagrossi, 8 Roméo Bouba Yagai, 1 , 2 Collins Ambe Chenwi, 1 Michel Carlos Tchouaket Tommo, 1 Grace Angong Beloumou, 1 Aude Christelle Ka’e, 1 , 2 , 3 Sandrine Claire Ndjeyep Djupsa, 1 Aissatou Abba, 1 Laeticia Grace Heunko Yatchou, 1 Krystel Nnomo Zam, 1 Rachel Kamgaing, 1 Samuel Martin Sosso, 1 Lucien Mama, 9 Nicaise Ndembi, 10 Vittorio Colizzi, 1 , 2 , 3 Carlo-Federico Perno, 1 , 8 Giulia Cappelli, 11 and Alexis Ndjolo 1 , 5
Development of a Sequencing Protocol for SARS-CoV-2 Genotyping: An alternative Approach for Genomic Surveillance in low and middle-income settings
Davy-Hyacinthe Anguechia Gouissia,b,,Desire Takoua, Ezechiel Ngoufack Jagni Semenguea,c, Grace Beloumoua, Sandrine Djupsaa , Collins Chenwia,d, Alex Durand Nkaa,c, Aissatou Abbaa, Aude Christelle Ka'ea,c, Willy Le Roi Togna Paboa, Aurelie Kengnia, Naomi Karell Etamea, Larissa Gaelle Mokoa,b, Evariste Molimboua, Derrick Tambe Ayuk Ngwesea,b, Rachel Audrey Nayang Mundoa, Michel Tommoa, Nadine Fainguema,c, Vittorio Colizzia,c,e, Carlo-Federico Pernoa,c,f, Joseph Fokama,b,g*
