Categories Articles Pfizer vaccine may be less effective against South African COVID-19 variant Post author By crystalg Post date March 24, 2021 Study Finds Tags African, against, COVID19, Effective, Less, Pfizer, South, Vaccine, Variant’ ← Seeking nominations for the advertising and marketing execs helping their companies prepare for a data-privacy world → Dr. Rachel Levine Is First Openly Trans Federal Official Confirmed by U.S. Senate