Mixing and matching is approved, and all adults are currently eligible for booster shots.
"Some people very well may prefer to get the vaccine they originally got," Walensky said."The vast majority of people did very well after getting their first vaccine, but the CDC now will allow new recommendations to mix and match and we do not indicate a preference."
"... There may be some people who would prefer a different vaccine or if you go into a pharmacy and they don’t have the vaccine you already got, it really is fine to get a different vaccine," Walensky continued. Azar noted that the choice to allow mixing and matching will make it easier for people to get booster shots. There is some data that indicates a stronger antibody response from mixing and matching a booster, but Azar said it's hard to read too much into that information.
"What we know is that if you do get a different booster from the original that you got, if you mixed and matched, the likelihood of you getting the same or a greater antibody response two weeks later is greater if you do a mix and match," Azar said."But what we don't know is whether or not those antibodies actually translate into better protection or more vaccine effectiveness.
"Women of childbearing age, who received a Johnson & Johnson , because of the clotting issue, may want to elect to get an mRNA ," Azar said, referring to rare blood clots that were found in some women of that age group who received
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