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New COVID strain is more transmissibleJanuary 5, 2023 -
What you need to know about the new XBB 1.5 omicron strainDecember 31, 2022 -
Pfizer seeks to expand omicron booster to kidsSeptember 27, 2022 -
Study finds hospitalization from omicron 10.5 times higher among unvaccinatedSeptember 11, 2022 -
FDA authorizes Omicron booster shots from Pfizer, ModernaAugust 31, 2022 -
Osterholm: BA.5 is so infectious an elevator ride is enough time to get you sickJuly 20, 2022 -
FDA recommends new COVID vax compositionJuly 2, 2022 -
COVID-19 cases increase by nearly 5% in the U.S.April 9, 2022 -
4 cases of 'stealth' omicron COVID subvariant detected in NYJanuary 28, 2022 -
Pfizer starts clinical trial for Omicron-specific vaccineJanuary 25, 2022