With four vaccines against Covid-19 in the final stage of U. S. clinical trials and a fifth on its way next month, Dr. Anthony Fauci sees the potential for vaccines to hold promise in some patient populations better than others.
With four vaccines against Covid-19 in the final stage of U. S. clinical trials and a fifth on its way next month, Dr. Anthony Fauci sees the potential for vaccines to hold promise in some patient populations better than others.