21 ianuarie 2021

Some Covid-19 mutations could dampen vaccine effectiveness - latest updates

trtworld.com

The number coronavirus of deaths have passed 400,000 in the US, according to its Centers for Disease Control and Prevention (CDC). Here are updates for January 21.In this Tuesday, January 5, 2021, file photo, a healthcare worker receives a second Pfizer-BioNTech Covid-19 vaccine shot at Beaumont Health in Southfield, Michigan, United States.(AP Archive)Thursday, January 21, 2021: Some virus mutations may dampen vaccine effectiveness Scientists are reporting troubling signs that some recent [...]