WHO Experts Warn Against Repeated COVID-19 Booster Shots


Experts in the World Health Organization (WHO) have warned that repeating booster doses of the original Covid vaccines is not a viable strategy against emerging variants.

In a statement published on Tuesday, the WHO Technical Advisory Group on Covid-19 Vaccine Composition (TAG-Co-VAC) noted that a vaccination strategy based on repeated booster doses of the original vaccine composition is unlikely to be appropriate or sustainable.

“As the virus evolves and until new vaccines are available, “the composition of current Covid-19 vaccines may need to be updated”, the group said.

Meanwhile, a growing body of evidence indicates that the Omicron Covid variant is not only far more transmissible than previous variants, but also better at dodging some vaccine protections.

While more than 67% of people in high income countries have received at least one jab, fewer than 11% have in low income countries, according to UN numbers.

The group of experts, who are working to assess the performance of Covid-19 vaccines, therefore, called for the development of new vaccines that not only protect people who contract Covid against falling seriously ill but also to prevent initial transmission as caution against emerging variants.

It also suggested that vaccine developers should strive to create vaccines that “elicit immune responses that are broad, strong, and long-lasting in order to reduce the need for successive booster doses”.

According to foreign media accounts, so far, more than eight billion doses of Covid-19 vaccines have been administered in at least 219 territories.

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