Dhaka, April 2 -- The preliminary epidemiological study titled 'Correlation between universal BCG vaccination policy and reduced morbidity and mortality for COVID-19,' posted on medRxiv, a site for unpublished medical research, finds a correlation between countries that require citizens to get the bacillus Calmette-Guerin (BCG) vaccine and those showing fewer number of confirmed cases and deaths from Covid-19, reports Bloomberg.

The study showed epidemiological evidence indicating that some of the differences in morbidity and mortality produced by COVID-19 across countries might be partially explained by a country's BCG vaccination policy.

Italy, where the COVID 19 mortality is very high, never implemented universal BCG vaccination. On ...