People fully vaccinated against Covid-19 in the US do not need a third dose of the vaccine. The two doses of the vaccine guarantee protection from the Delta variant. “We are ready for booster doses,” if any, “if and when science proves they are needed.” The American Food and Drug Administration (Fda) and the American Centers for Disease Control and Prevention (CDC) specified this in a joint statement.
Pfizer and BioNTech have announced their intention to ask the FDA for the green light for a third dose of the anti-Covid vaccine, to give “even greater protection” to the population. But the US health authorities – according to reports in the US press – claim that the fully vaccinated are also protected from variants of Sars-CoV-2, including the more contagious Delta variant, which is destined to become dominant. However, they urged citizens aged 12 and over who have not yet been vaccinated to undergo the shield injection.
“Unvaccinated people remain at risk”, the Fda and the CDC warned, noting that “practically all hospitalizations and deaths from Covid-19 are among those who are not vaccinated”.
The authorities assure in any case that the Fda, the CDC and the National Institutes of Health (Nih) “are engaged in a rigorous and science-based process to assess whether or when a recall may be necessary. This process – they point out – takes into account the data of laboratory, clinical and cohort studies, which may also include data from specific pharmaceutical companies, but which are not based solely on these. We continue to review all new evidence as it becomes available and will inform citizens. “