A new Morbidity and Mortality Weekly Report (MMWR) shows that when Omicron variants were circulating, vaccine effectiveness of the original mRNA vaccines against COVID-19-associated hospitalization decreased with time after vaccination.
As winter approaches, it’s important to make sure you’re up to date on COVID-19 vaccines, including boosters. CDC recommends everyone 5 years and older get an updated (bivalent) booster, which targets Omicron variants BA.4 and BA.5 and the original strain of the virus that causes COVID-19.
https://www.cdc.gov/mmwr/volumes/71/wr/mm7142a3.htm...
Original source can be found here.
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