Whatsuptoday Worldnews: It’s highly transmissible and it may cause more severe illness. Should the U.S. be worried about the Delta variant?

Tuesday, June 22, 2021

It’s highly transmissible and it may cause more severe illness. Should the U.S. be worried about the Delta variant?

By BY EMILY ANTHES from NYT World https://nyti.ms/3vOtYKj New York Times

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