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Volume 28, Number 1—January 2022

Emergence of SARS-CoV-2 Delta Variant, Benin, May–July 2021

Anges Yadouleton1, Anna-Lena Sander1, 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 DrexlerComments to Author 
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)

Main Article


Detection rates of major SARS-CoV-2 lineages over time, Benin, May–mid-July 2021*

Pangolin lineages % Lineages
May June July
B.1.1.7 Alpha 3.4 3.4 1.8
B.1.351 Beta 3.4 0 0
B.1.617.2 Delta 3.4 27.6 52.7
AY.4 Delta 0 10.3 10.9
B.1 3.4 0 0
B.1.1.1 3.4 0 0
B.1.1.318 58.6 55.2 29.1
B.1.525 13.8 0 1.8
B.1.620 3.4 0 0
AV.1 0 0 1.8
AZ.2 0 3.4 0
C.36.3 6.9 0 1.8

*Lineages according to Pangolin software ( SARS-CoV-2, severe acute respiratory syndrome coronavirus 2.

Main Article

1These first authors contributed equally to this article.

Page created: September 29, 2021
Page updated: December 20, 2021
Page reviewed: December 20, 2021
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