According to a case-control analysis which included data from 21 hospitals in the United States, the two-dose Pfizer and Moderna vaccines offered the best protection for preventing COVID-19 related hospital admissions.

Between March and August 2021, the vaccine effectiveness (VE) against hospitalizations was found to be 93% for the Moderna vaccine, 88% for the Pfizer jab, and 71% for the Johnson & Johnson shot, noted researchers. However, after 120 days, VE for Moderna jab against hospitalization dropped only to 92%, representing a non-significant decline, while Pfizer COVID-19 vaccine VE came down to 77%. There were no data for the J&J vaccine after 120 days as only a limited number of people received the vaccine, though the VE rate dropped to 68% for the vaccine after 28 days. The results are published in the Morbidity and Mortality Weekly Report… (Medpage Today)