BCG vaccination and COVID-19: conflicting results (search done on 2 May 2020)

Added July 22, 2020

Citation: Riccò M, Gualerzi G, Ranzieri S, et al. Stop playing with data: there is no sound evidence that Bacille Calmette-Guérin may avoid SARS-CoV-2 infection (for now). Acta Biomedica. 2020 May 11;91(2):207-13.

What is this? Bacille Calmette-Guérin (BCG) vaccination has been proposed as a potential preventative or therapeutic measure against COVID-19.

In this rapid review, the authors searched for studies on the association between BCG vaccination and incidence and deaths from COVID-19. They restricted their search to articles published in Italian, English, German, French or Spanish and did the search on 2 May 2020. They included 13 studies, of which 12 were pre-prints. All were ecological studies of low quality.

What was found: At the time of this review, the included studies showed conflicting results on the association between BCG vaccination and COVID-19.

 

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