Vaccine makers are racing to update their COVID-19 shots against the newest coronavirus threat even before it’s clear a change is needed, just in case.
A new U.S. travel ban from South Africa and seven other southern African countries started Monday to prevent the omicron COVID variant from spreading to America.
A new U.S. travel ban from South Africa and seven other southern African countries started Monday to prevent the omicron COVID variant from spreading to America.
BRUSSELS (AP) — The discovery of a new coronavirus variant sent a chill through much of the world Friday as nations raced to halt air travel, markets fell sharply and