Emergence of SARS-CoV-2 Delta Variant, Benin, May–July 2021
Anges Yadouleton
1, Anna-Lena Sander
1, Praise Adewumi, Edmilson F. de Oliveira Filho, Carine Tchibozo, Gildas Hounkanrin, Keke K. René, Dossou Ange, Rodrigue K. Kohoun, Ramalia Chabi Nari, Sourakatou Salifou, Raoul Saizonou, Clement G. Kakai, Sonia V. Bedié, Fattah Al Onifade, Michael Nagel, Melchior A. Joël Aïssi, Petas Akogbeto, Christian Drosten, Ben Wulf, Andres Moreira-Soto, Mamoudou Harouna Djingarey, Benjamin Hounkpatin, and Jan Felix Drexler
Author affiliations: Laboratoire des Fièvres Hémorragiques Virales du Benin, Cotonou, Benin (A. Yadouleton, P. Adewumi, C. Tchibozo, G. Hounkanrin, R.C. Nari); Université Nationale des Sciences, Technologies, Ingénierie et Mathématiques, Abomey, Benin (A. Yadouleton, P. Adewumi, C. Tchibozo, G. Hounkanrin); Charité–Universitätsmedizin Berlin, Berlin, Germany (A.-L. Sander, E.F. de Oliveira Filho, C. Drosten, B. Wulf, A. Moreira-Soto, J.F. Drexler); Ministry of Health, Cotonou, Benin (K.K. René, D. Ange, R.K. Kohoun, S. Salifou, P. Akogbeto, B. Hounkpatin); Organisation mondiale de la Santé Cotonou, Contonou (R. Saizonou, C.G. Kakai, S.V. Bedié, F. Al Onifade, M.A. Joël Aïssi, M.H. Djingarey); Deutsche Gesellschaft für Internationale Zusammenarbeit, Bonn, Germany (M. Nagel); German Centre for Infection Research, Berlin, Germany (C. Drosten, J.F. Drexler); World Health Organization Regional Office for Africa, Brazzaville, Congo (M.H. Djingarey)
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Figure 1
Figure 1. Molecular surveillance of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in Benin, May–July 2021. A) Sampling sites from which 200 SARS-CoV-2–positive respiratory samples were collected. Left map shows enlarged region of the 4 sampling sites in southern Benin; center map shows location sampling sites in the southern tip of the Benin; right map shows location of Benin (red) in Africa. Benin maps were obtained from The Humanitarian Data Exchange (https://data.humdata.org) and were plotted with the ggplot2 package in R (R Foundation for Statistical Computing, https://www.r-project.org); Africa map was generated by using the rworldmap package in R. B) Reported number of cases from Benin during 2021 based on data from the World Health Organization (https://covid19.who.int/region/afro/country/bj; accessed 2021 Sep 21). Red horizontal line indicates the study period. C) Monthly number of SARS-CoV-2–positive samples from the reference laboratory in Benin. Red denotes the number of samples that were sequenced in this study. Numbers below baseline indicate the total number of samples collected each month.
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