Scientists who helped develop Pfizer-BioNTech Covid vaccine agree the third shot is needed as immunity declines
:strip_exif(true):strip_icc(true):no_upscale(true):quality(65)/d1vhqlrjc8h82r.cloudfront.net/01-13-2021/t_cfd5f672c37a49ed87661e50bab97a73_name_image.jpg "Memorial Healthcare now offers both Moderna, Pfizer-BioNtech vaccine at select locations")
