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New COVID strain is more transmissibleJanuary 8, 2023 -
Pfizer seeks to expand omicron booster to kidsSeptember 29, 2022 -
Study finds hospitalization from omicron 10.5 times higher among unvaccinatedSeptember 13, 2022 -
WHO recommends 2nd booster shot for 'vulnerable' peopleMay 19, 2022 -
COVID-19 cases increase by nearly 5% in the U.S.April 11, 2022