Federal health officials on Friday updated public guidance about how the coronavirus spreads, emphasizing that transmission occurs by inhaling very fine respiratory droplets and aerosolized particles, as well as through contact with sprayed droplets or touching contaminated hands to one’s mouth, nose or eyes.
The World Health Organization on Friday approved China’s Sinopharm’s Covid-19 vaccine for emergency use, easing the way for poorer nations to get access to another much-needed shot to help end the pandemic.
Pfizer and BioNTech asked the Food and Drug Administration Friday for full approval of the companies' Covid-19 vaccine. If approved, it would be the first Covid-19 vaccine in the United States to hold that distinction.
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