Case-control study | Odds of hospitalization for COVID-19 after 3 vs. 2 doses of mRNA vaccine by time since booster dose. 19 Oct, 2022 | 14:27h | UTC Odds of Hospitalization for COVID-19 After 3 vs 2 Doses of mRNA COVID-19 Vaccine by Time Since Booster Dose – JAMA News Release: Study indicates COVID-19 boosters among vaccinated individuals significantly reduce hospitalization rates – Providence Health & Services