The U.S. Food and Drug Administration (FDA) announced that it will expand the range of booster shots available to all adults, where the third vaccine is administered with two types of COVID-19 vaccines, such as Pfizer’s BNT162b2 Moderna mRNA-1273.
The FDA announced on November 19 (local time) that adults over the age of 18 who received two doses of the COVID-19 vaccine for at least 6 months will be able to receive the third booster shot through Pfizer and Moderna. Booster shot vaccination can be done three times with the same type of vaccine, but there is no problem with other types of vaccines. In other words, even if the first two doses of the vaccine were administered with Moderna, the third dose of Pfizer would not be a problem.
Attempts to administer these different vaccines are called mix-and-match. According to NIH data from the National Institutes of Health that tested this mix-man match, when Moderna and Pfizer were vaccinated with BoosterShot, not only those who received the first two doses of Moderna, but also those who received the first two doses of Pfizer. It has been shown to produce the highest level of antibody.
Also, in this trial, 100 µg of vaccine was used to inoculate Moderna and Pfizer’s BoosterShot, but the FDA approved booster inoculation dose is 50 µg, which is half the amount used in the trial. Therefore, it is unclear whether Moderna and Pfizer 50 μg booster shots will be able to generate the highest level of antibody as the NIH data.
According to the report, data released by the NIH show that BoosterShot is effective in re-elevating safe COVID-19 antibody levels. In addition, Bio&Tech, which developed the COVID-19 vaccine with Pfizer, said that the NIH data released on the vaccine booster shot shows that its vaccine booster inoculation can obtain and maintain high antibodies against the COVID-19 mutations tested so far, including the delta mutation. said to indicate that
Following FDA approval, if CDC approval is obtained, booster vaccination for adults will be available throughout the United States. Related information can be found here.