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Articles sur SARS-CoV-2

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Researchers can test blood samples taken for other reasons to see if patients have previously had COVID-19. Don Bartletti/Los Angeles Times via Getty Images

COVID-19 official counts can miss mild cases – here’s how serosurveys that analyze blood for signs of past infection can help

Your blood can hold a record of past illnesses. That information can reveal how many people have had a certain infection – like 58% of Americans having had COVID-19 by the end of February 2022.
Dozens of coronavirus vaccines are in clinical trials in the U.S. Joao Paulo Burini/Moment via Getty Images

Will new vaccines be better at fighting coronavirus variants? 5 questions answered

Existing coronavirus vaccines are not as effective against newer variants of the virus. Two vaccine experts explain how new vaccines currently in development will likely offer better protection.
Millions of U.S. children ages 5-11 have already received at least one dose of the COVID-19 vaccine. Keith Birmingham/MediaNews Group/Pasadena Star-News via Getty Images

COVID-19 vaccines for the youngest children may be inching closer to authorization – a pediatrician explains how they’re being tested

Moderna will ask the FDA to allow emergency use for its vaccine in children as young as 6 months, a step many parents have been anticipating.

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