WASHINGTON, D.C.: Scientists have known for several months the new coronavirus can become suspended in microdroplets expelled by patients when they speak and breathe, but until now there was no proof that these tiny particles are infectious.
A ragpicker stands in front of a mural on COVID-19 coronavirus awareness, painted on a wall along the roadside in New Delhi on July 23, 2020. -India last week became the third country after the United States and Brazil to hit one million cases but many experts say that with testing rates low, the true number could be much higher. (Photo by SAJJAD HUSSAIN / AFP)