2 doses of Johnson & Johnson's vaccine 85% effective against hospitalizations: South African study Gotham Rex 2 years ago J&J also found its vaccine likely works as a booster for those who got Pfizer. Source: Check out ABC 7 for more… Share: J&J to resume COVID-19 vaccine rollout in EuropeDateApril 21, 2021In relation toNew York CityNearly 60,000 doses of J&J COVID-19 vaccine set to expire in ArkansasDateMay 29, 2021In relation toNew York CityExperts urge booster shot ASAP for Johnson & Johnson vaccineDateOctober 16, 2021In relation toNew York City
