HealthAnalysis of earliest covid-19 cases points to Wuhan market as source A fresh look at what we know about the first covid-19 cases shows that the earliest known instance was in a person who worked at the Huanan market in Wuhan, which was suspected as the source from the start of the pandemic News
HealthHow much less likely are you to spread covid-19 if you're vaccinated? Vaccination still greatly reduces the risk of infecting others despite the arrival of the delta variant, recent studies show News