Pfizer, AstraZeneca COVID vaccines less effective at fighting Omicron: study

Pfizer and AstraZeneca's COVID-19 vaccines are not as effective in fighting off the Omicron variant compared to other strains, according to a new study published Monday.

Pfizer, AstraZeneca COVID vaccines less effective at fighting Omicron: study
Pfizer and AstraZeneca's COVID-19 vaccines are not as effective in fighting off the Omicron variant compared to other strains, according to a new study published Monday.