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New Delhi: Countries that do not have a BCG vaccination policy saw ten times greater incidence of and mortality from Covid-19, compared with those who do, a forthcoming study from medical researchers in the US and UK, which analysed data from 178 countries, has found. BCG, or Bacillus Calmette-Guérin, is a vaccine for tuberculosis and is administered at birth in countries that have historically suffered from the disease, such as India. Many rich nations, such as the US, Italy and Holla….more