Repeated Covid boosters not viable strategy against new variants, WHO experts warn
“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 published on Tuesday.
“Covid-19 vaccines that have high impact on prevention of infection and transmission, in addition to the prevention of severe disease and death, are needed and should be developed,” the advisory group said.
It also suggested that vaccine developers should strive to create jabs that “elicit immune responses that are broad, strong, and long-lasting in order to reduce the need for successive booster doses”.
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Frequent Boosters Spur Warning on Immune Response
European Union regulators warned that frequent Covid-19 booster shots could adversely affect the immune response and may not be feasible.
Repeat booster doses every four months could eventually weaken the immune response and tire out people, according to the European Medicines Agency. Instead, countries should leave more time between booster programs and tie them to the onset of the cold season in each hemisphere, following the blueprint set out by influenza vaccination strategies, the agency said.
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U medjuvremenu se vakcinisemo vakcinama za varijantu X dok svijetom hara varijanta Y a kada budu dostupne vakcine za Y onda ce na djelu da bude neka nova varijanta Z. Boosters for life.
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