Several coronavirus variants with the potential to be more transmissible have caused global concern over whether existing vaccines will still protect the world from a virus […]
Two U.K. studies released Monday showed that COVID-19 vaccination programs are contributing to a sharp drop in hospitalizations, boosting hopes that the shots will work as […]
Portugal’s official daily number of new COVID-19 cases on Monday dropped below 1,000 for the first time since early October, amid a national lockdown and just […]