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১৫ জানুয়ারি, ২০২২ ০৮:২৮ অপরাহ্ণ
Repeated Covid boosters not a viable strategy: WHO , Observer Online Desk
WHO experts warned Tuesday that repeating booster doses of the original Covid vaccines is not a viable strategy against emerging variants and called for new jabs that better protect against transmission.
An expert group created by the World Health Organization to assess the performance of Covid-19 vaccines said simply providing fresh jabs of existing Covid vaccines as new strains of the virus emerge was not the best way to fight the pandemic.
"A vaccination strategy based on repeated booster doses of the original vaccine composition is unlikely to be appropriate or sustainable," the WHO Technical Advisory Group on Covid-19 Vaccine Composition (TAG-Co-VAC) said in a statement, AFP reports.
It said preliminary data indicated the existing vaccines were less effective at preventing symptomatic Covid disease in people who have contracted the new Omicron variant, currently spreading like wildfire around the world.
But protection against severe disease, which is what the jabs were especially intended to do, "is more likely to be preserved".