The researchers noted that airborne transmission by respiratory aerosol droplets produced during coughing and sneezing is the dominant mode of spreading for infectious diseases such as Covid-19.
source https://www.hindustantimes.com/india-news/n-95-masks-most-effective-at-curbing-covid-19-spread/story-OB7Uv6MV19pIbg9kvJqQ2L.html
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