US May Allow Vaccine ‘Mixes’ for COVID Booster

US health officials are preparing to allow the use of a different COVID vaccine for the booster dose than the one originally used for immunization, according to US media.

• See also: EN DIRECT | The latest developments on COVID-19

The United States Drug Administration (FDA) could make the announcement on Wednesday, the New York Times reported, among others, when it announced its decision to authorize booster doses for the Moderna and Johnson & Johnson vaccines.

In many countries it is already possible to “mix” vaccines.

However, the FDA could recommend giving preference to injecting a dose of the same vaccine whenever possible, according to sources cited by the US press.

This announcement from health authorities is likely to be of particular interest to people who have received the Johnson & Johnson single-dose vaccine, or about 15 million Americans.

The information comes after the release last week of the preliminary results of a study conducted in the United States, which suggests that people who received the “J & J” vaccine may benefit from receiving a booster dose of a different vaccine. , To messenger RNA, in to benefit from an even greater increase in your antibody levels.

An FDA advisory committee last week recommended the authorization of a Johnson & Johnson booster dose for all people over 18 years of age, and Moderna for certain categories of the population at risk, including the elderly.

Once the FDA’s decision is announced, a committee of experts from the Centers for Disease Prevention and Control (CDC) will meet Thursday to review the data supporting the principle of these booster doses, before they the agency does not publish its precise recommendations for these injections, intended for the healthcare professionals who administer them.

A Pfizer booster vaccine is already licensed in the country for certain categories of at-risk populations.


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