Deliberate infection trial finds COVID symptoms don’t indicate viral shedding

A 3D-printed coronavirus model is seen in front of the words coronavirus disease (Covid-19) on display in this illustration taken March 25, 2020. REUTERS/Dado Ruvic/Illustration/File Photo Register now for FREE unlimited access to Reuters.com Register April 1 (Reuters) – The world’s first “human challenge” trial in which volunteers were deliberately exposed to the coronavirus has … Read more

US authorizes second COVID booster for Americans 50 and older

March 29 (Reuters) – US health officials on Tuesday authorized a second COVID-19 booster dose of the two most commonly used COVID-19 vaccines for people age 50 and older, citing data showing waning immunity and the risks posed by Omicron variants of the virus. The US Food and Drug Administration agency said the new boosters … Read more