How a mask can help in fight against Covid-19

After months of insisting that masks aren’t necessary unless you’re unwell, health agencies across the globe are now encouraging mask-wearing for everyone. And the move appears to be backed by research that suggests masks, even homemade face covers, can be effective in protecting against Covid-19.

from Times of India https://timesofindia.indiatimes.com/india/how-a-mask-can-help-in-fight-against-covid-19/articleshow/75019971.cms