Is TB vaccine the reason behind Covid-19's less deadly effect in Pakistan? Experts are finding out

The novel coronavirus has infected millions of people and led to tens of thousands of deaths around the globe. While it has forced almost the entire world into a lockdown, in some countries, its impact seems to be less deadly than in others.

Many observers have been left startled comparing death rates in some of the most developed economies of the world, including Europe and the United States, with those being witnessed in the much less developed countries of South Asia and Africa – where...