In a review published in The Lancet by an international group of scientists, including from the FDA and the WHO, the scientists state that none of the data available on COVID-19 vaccines thus far provides reliable evidence to support booster doses for the general population.

The scientists stated that the advantage that the boosters provide would not outweigh the benefit of offering those doses to protect the people who are still unvaccinated globally. While boosters may be useful in some individuals who have weak immune systems, they are not required for the general population. Lead author Ana-Maria Henao-Restrepo, of the WHO, stated that studies do not provide any reliable evidence of a considerable decline in protection against severe disease, which is the main aim of vaccination, adding that if the vaccines are put to use where they would be most beneficial, then they could speed up the end of the pandemic by curbing the development of variants… (ET Healthworld, September 14, 2021)