Why a century-old vaccine offers new hope against pathogens - Moneycontrol

The Bacillus-Calmette-Guerin vaccine has long been known to have broad effects on the immune system, and is still given to infants in the developing world and in countries where TB is prevalent.

In the early days of the COVID-19 pandemic, when prevention seemed light years away, several scientists launched trials to see whether a tuberculosis vaccine developed in the early 1900s might protec… [+6948 chars]

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