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Correlation between COVID-19 case fatality rate and percentage of BCG vaccination: is it true the vaccine is protective?
2020
Egyptian Journal of Bronchology
Background The observations of some recent epidemiological studies offer hope for a reduced impact of COVID-19 for countries which practice universal BCG vaccination policy. Main body This report provides a correlation between the case fatality rates of COVID-19 and the percentage of BCG vaccination coverage in 183 most affected countries. The main objective of this observational ecologic report is to evaluate possible effects of the previous BCG vaccination in different populations and the
doi:10.1186/s43168-020-00022-1
fatcat:gud5z3cp4vc3jpmgaibdmtpbkm