July 9, 2021 -- Shortly aft Pfizer announced its volition to question FDA authorization for a 3rd COVID-19 vaccine changeable connected Thursday, the CDC, FDA and National Institutes of Health countered with a associated connection the aforesaid time saying, essentially, it's inactive excessively soon.
In a conflict of the booster changeable statements, the vaccine shaper and the U.S. authorities are drafting precise antithetic conclusions based connected the grounds to date.
Pfizer points to "encouraging data" for a 3rd changeable to beryllium fixed 6 months aft archetypal vaccination successful an ongoing proceedings of its COVID-19 vaccine. The institution said the survey supports vaccine efficacy against the Beta variant of interest archetypal identified successful South Africa.
Furthermore, a June study successful Nature recovered 2 doses of their vaccine produced beardown neutralizing antibodies against the Delta variant successful laboratory testing. "The companies expect that a 3rd dose volition boost those antibody titers adjacent higher," the Pfizer statement reads.
Pfizer, on with its spouse BioNTech, besides pointed to evidence from Israel that the existing two-dose mRNA vaccine regimen provides little extortion against corruption arsenic the Delta variant levels proceed to turn successful the U.S. and elsewhere.
Putting the Brakes connected a Booster?
Just hours later, the U.S. authorities agencies released a two-paragraph joint statement.
"Americans who person been afloat vaccinated bash not request a booster changeable astatine this time. FDA, CDC, and NIH are engaged successful a science-based, rigorous process to see whether oregon erstwhile a booster mightiness beryllium necessary," the agencies said.
The U.S. authorities appeared to admit Pfizer's determination but emphasized they volition proceed to look astatine the large picture. "This process takes into relationship laboratory data, objective proceedings data, and cohort information -- which tin see information from circumstantial pharmaceutical companies, but does not trust connected those information exclusively."
The agencies add, "We proceed to reappraisal immoderate caller information arsenic it becomes disposable and volition support the nationalist informed. We are prepared for booster doses if and erstwhile the subject demonstrates that they are needed."