Characterizing the evolving SARS-CoV-2 seroprevalence in urban and rural Malawi between February 2021 and April 2022: A population-based cohort study
Malawi, one of the lowest-income countries in Africa [1], has experienced four waves of COVID-19 in the first 2 years of the pandemic; June-August 2020 (wave 1, likely ancestral), December 2020-April 2021 (wave 2, Beta) June-September 2021 (wave 3, Delta) and December 2021-January 2022 (wave 4, Omicron BA.1/2; Figure 1) [2]. Due to limited SARS-CoV-2 testing [3] and surveillance, in addition to a high proportion of asymptomatic infections, the number of confirmed cases likely substantially underestimates the true burden of COVID-19 in Malawi, even more so than in other settings.
Source: International Journal of Infectious Diseases - Category: Infectious Diseases Authors: Louis Banda, Antonia Ho, Stephen Kasenda, Jonathan M. Read, Chris Jewell, Alison Price, Estelle McLean, Albert Dube, David Chaima, Lyson Samikwa, Tonney S. Nyirenda, Ellen C. Hughes, Brian J. Willett, Annie Chauma Mwale, Abena S. Amoah, Amelia Crampin Source Type: research
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