![]() "You may actually excrete more virus and that's why it's more transmissible," microbiologist Sharon Peacock, who runs the U.K.'s efforts to sequence the genomes of coronavirus variants, recently told Reuters. The researchers also found people carrying this variant test positive faster: around four days after exposure, compared to around six for the original strain. That suggests delta replicates at a quicker pace inside someone's body. (Spencer Platt/Getty Images)Īnother study from a team in China, which has not yet been peer-reviewed, found people infected with the delta variant carried, on average, a more than 1,000 times higher amount of virus in their nose compared to the original strain - which likely means they're shedding more of it. Centers for Disease Control and Prevention now recommends that fully vaccinated people begin wearing masks indoors again in places with high COVID-19 transmission rates. Due to the rapidly spreading delta variant, the U.S. People wear masks while walking in Grand Central Terminal in New York City on July 27.
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