Washington [US], February 18 (ANI): Pfizer-BioNTech's Covid-19 vaccine can protect people against concerning new coronavirus variants, including one first seen in South Africa called B.1.351, according to report published in the New England Journal of Medicine on Wednesday.
Washington [US], February 12 (ANI): The United States has secured an additional 200 million doses of Moderna and Pfizer COVID-19 vaccines, President Joe Biden announced on Thursday (local time).