Alliance for Pandemic Preparedness

August 24, 2020

BCG Vaccination in Infancy Does Not Protect against COVID-19. Evidence from a Natural Experiment in Sweden

Category:

Topic:

Keywords (Tags):

  • By analyzing data from birth cohorts born just before and just after a 1975 policy change that discontinued BCG vaccine in Sweden, de Chaisemartin et al. conclude that the vaccine does not have a protective effect against COVID-19. The authors assessed COVID-19 cases and hospitalizations among 1,026,304 people with the BCG vaccine and 1,018,544 people without the vaccine.

de Chaisemartin and de Chaisemartin. (Aug 23, 2020). BCG Vaccination in Infancy Does Not Protect against COVID-19. Evidence from a Natural Experiment in Sweden. Clinical Infectious Diseases. https://doi.org/10.1093/cid/ciaa1223