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 51¶¯Âþ
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 51¶¯Âþ