Reason for concern, but not unnecessary alarm, researchers say. The first real-world study pitting COVID-19 variants against the Pfizer vaccine showed that the variant first detected in South Africa ...
The U.S. said Friday that it would restrict travel from South Africa and seven other countries amid fears that a newly-discovered COVID-19 variant could lead to a surge of worldwide cases and deaths.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback