Omicron : Booster shots provide only 70%-75% protection
Covid vaccine boosters improve protection to as much as 75% against a rapidly spreading omicron variant that’s much more likely to bypass two doses than earlier strains, preliminary U.K. data shows.
The findings are some of the earliest data on the protection against omicron outside of lab studies, which have shown reduced neutralizing activity against omicron.
In its latest technical briefing, the agency said two doses of both the Oxford/AstraZeneca administered in India as Covishield and Pfizer/BioNtech vaccines provide “much lower levels” of protection against symptomatic infection compared to the currently dominant Delta variant of Covid19.
Two Singapore residents may have caught the omicron variant even after receiving Covid19 booster shots, in cases which may shed light on the protection offered by a third dose of vaccine.
Both people are recovering in isolation at the National Centre for Infectious Diseases, and all close contacts will be placed in 10-day quarantine at designated facilities, the ministry said.