The Delta variant of the coronavirus causes more severe illness than the earlier versions and it is as contagious as chickenpox,saying an internal document prepared by the top American health agency.The Washington Post, which first reported these findings, said the internal document makes the case for health officials to “acknowledge the war has changed”.
Lorem ipsum dolor sit amet, consectetur adipisicing elit. Velit omnis animi et iure laudantium vitae, praesentium optio, sapiente distinctio illo?