On polio: ’There is no evidence that oral poliovirus vaccine (OPV) protects people against infection with COVID-19 virus. A clinical trial addressing this question is planned in the USA, and WHO will evaluate the evidence when it is available. In the absence of evidence, WHO does not recommend OPV vaccination for the prevention of COVID-19.’
Download here (Polio Eradication Initiative, March 2020)
On BCG: ‘There is no evidence that the Bacille Calmette-Guérin vaccine (BCG) protects people against infection with COVID-19 virus. Two clinical trials addressing this question are underway, and WHO will evaluate the evidence when it is available. In the absence of evidence, WHO does not recommend BCG vaccination for the prevention of COVID-19. WHO continues to recommend neonatal BCG vaccination in countries or settings with a high incidence of tuberculosis.’
Read here (WHO, April 12, 2020)
