mRNA COVID vaccines protect against severe Omicron for at least half a year--new study

mRNA COVID vaccines protect against severe Omicron for at least half a year mRNA booster protection against severe COVID-19 was 87% and didn't wane for 6 months, a new study shows. CIDRAP

COVID-19 mRNA booster vaccines offered protection against severe COVID-19 caused by the Omicron variant for at least 6 months, and three doses of China's inactivated vaccines were more protective than two doses but not as protective as three doses of mRNA vaccines, finds a study from Singapore published today in JAMA Network Open.

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