The coronavirus variant detected in South Africa poses a “significant re-infection risk” and raises concerns over vaccine effectiveness, according to preliminary research Wednesday, as separate studies […]
Portugal’s new daily COVID-19 cases jumped to more than 14,600 to set a new national record Wednesday, as the country weathers one of the worst pandemic […]
The push to inoculate Americans against the coronavirus is hitting a roadblock: A number of states are reporting they are running out of vaccine, and tens […]