Pfizer, AstraZeneca COVID vaccines less effective at fighting Omicron: study
Pfizer jabs protect 70% against hospitalization from omicron
Omicron
![Pfizer, AstraZeneca COVID vaccines less effective at fighting Omicron: study]()
New U.S. COVID-19 international travel testing rules take effect Monday
New rules requiring international air travelers arriving in the United States to obtain a negative COVID-19 test within one day of travel will take effect Monday at 12:01 a.m. ET (0501 GMT), according to an order issued late Thursday.
![New U.S. COVID-19 international travel testing rules take effect Monday]()
U.S., Germany plan new restrictions as Omicron rattles investors
Joe Biden to announce nationwide coronavirus battle plan.
Plans include a drive to encourage vaccine boosters, expansion of at-home tests and tighter restrictions on international travel.![U.S., Germany plan new restrictions as Omicron rattles investors]()
Moderna boss predicts current vaccines may be less effective against Omicron
The chief executive of the US drugmaker Moderna has predicted that existing vaccines will be less effective against Omicron than they have been against the Delta version, sending global stock markets sharply lower.
![Moderna boss predicts current vaccines may be less effective against Omicron]()
Omicron Covid variant poses very high global risk, says WHO
UN agency urges acceleration of vaccination of high-priority groups to tackle spread of variant
![Omicron Covid variant poses very high global risk]()
Suspected Omicron Covid cases found in Germany and Czech Republic
Concerns over COVID variant trigger more travel curbs on southern Africa
![Suspected Omicron Covid cases found in Germany and Czech Republic]()
