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Since its discovery in the Huanan Seafood Market, Hubei province, Wuhan, China, in December 2019, the 2019-novel Coronavirus has evolved rapidly into a global pandemic of devastating proportions. With the most developed health systems of the world struggling to contain the spread, there have been concerns raised about the relatively lower case and mortality figures coming out of the African continent, especially in the earlier days of the outbreak. While most institutions are quick to raise the obvious resource and diagnostic limitations as an explanation for this situation, recently a series of ecological studies have suggested a possible correlation between BCG vaccination policy and COVID-19 transmission and mortality rates, opening a case for an alternative or additional explanation for why Africa as a continent is reacting less violently to the SARS-CoV-2 virus. In this commentary, we rapidly present the key findings from these studies and highlight what implications such a correlation could have on African healthcare systems, should it be true.

journal of infectious diseases and epidemiology

Possible Correlation between Bacillus Calmette Guérin (BCG) Vaccination Policy and SARS-Cov-2 Transmission, Morbidity and Mortality Rates: Implications for the African Continent