Scientists from the US Food and Drug Administration (FDA) and the World Health Organization (WHO) reported that booster shots of the vaccine are not needed COVID-19 for the general population.
The scientists assured, in an article published in the medical journal The Lancet, That needed more evidence to justify reinforcement. That opinion does not coincide with the plans of the government of United States to begin offering another round of vaccines to many fully vaccinated citizens next week, depending on the approval of health regulators.
The WHO has argued that vaccines are still needed to fill them in the first doses around the world.
“Any decision about the need for a boost or the timing of the boost should be based on careful analysis of adequately controlled clinical or epidemiological data, or both, indicating a persistent and significant reduction in severe disease, ”the scientists wrote in the medical journal.
The risk-benefit assessment should consider how many severe COVID-19 cases the boost would be expected to prevent, and whether it is safe and effective against current variants, they said.
“Therefore, current evidence does not appear to show the need for a boost in the general population, where efficacy against serious diseases remains high,” the scientists wrote.
Some countries have started dose booster campaigns against COVID-19, including Israel, providing some of the data on which the Biden administration has argued for the need for additional injections.
The authors of the article included the head of the FDA’s Office of Research and Vaccines, Marion Gruber, and to the deputy director Phil Krause, who plan to leave the agency in the next few months.
Similarly, they recognized that some people, such as the immunosuppressed, could benefit from an additional dose.
Wider use of boosters may be needed in the future if there is decreased immunity to primary vaccination or if new variants evolve that make vaccines no longer protect against the virus, they said.
The Booster doses could also be risky if introduced too early or too oftenthe scientists wrote.
The authors of the article included top WHO scientists as Soumya Swaminathan, Ana-Maria Henao-Restrepo and Mike Ryan.
“Current vaccine supplies could save more lives if used in previously unvaccinated populations,” according to the authors.