US: FDA approved Moderna and Johnson & Johnson booster doses and enabled a combination of vaccines.

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source: reuters.com

US: FDA approved Moderna and Johnson & Johnson booster doses and enabled a combination of vaccines.

The decisions of the Food and Drug Administration represent a significant step towards expanding the booster campaign in the North American country, which began with additional doses of the Pfizer vaccine last month.

FDA decisions differ because vaccines are manufactured differently, with different dosing schedules. The J&J vaccine has consistently shown lower efficacy than Moderna is and Pfizer's two-dose vaccines..

US regulators approved expanding COVID-19 booster doses to Americans who received the Moderna or Johnson & Johnson vaccine on Wednesday and said anyone who qualifies for an additional amount could get a brand. Different from the one you initially received.

The Food and Drug Administration (FDA) decisions mark a big step toward expanding the booster campaign in the US, which began with additional doses of Pfizer's vaccine last month. But before more people get down to business, the Centers for Disease Control and Prevention will consult a panel of experts later this week before finalizing official recommendations on who should get boosters and when.

The latest measures will expand the number of Americans who can receive boosters by tens of millions and will formally allow vaccines to be "mixed and matched," making it easier to get another dose, especially for people who have had a side effect with a brand but that they still want the proven protection of vaccination.

Specifically, the FDA has authorized a third dose of Moderna for the elderly and others at high risk of contracting COVID-19 due to their health problems, jobs, or living conditions, six months after their last vaccination. A significant change: the Moderna booster dose will be half that used for the first two injections, based on company data showing sufficient to reactivate immunity.

In the case of J & J's single-dose vaccine, the FDA said thatAll all US recipients should receive a second dose at least two months after the initial vaccination.

FDA decisions differ because vaccines are manufactured differently, with different dosing schedules. The J&J vaccine has consistently shown lower efficacy than Moderna and Pfizer's two-dose vaccines.