WASHINGTON, D.C. — A major study is underway to determine if you can be vaccinated with two different types of COVID-19 shots and get the same – or perhaps better — protection.
A first-of-its-kind study could end up having a big impact on vaccine rollouts around the globe.
In the U.K., scientists are studying whether you can mix and match COVID-19 vaccines.
For example, get a first dose from Pfizer followed by a second dose of AstraZeneca – or the other way around.
The study started in February and recently expanded to include Moderna and Novavax vaccines.
Multiple combinations will be reviewed, and the results of the study could be available by the summer.
For now, the Centers for Disease Control and Prevention says people should take the full series of a single brand.
However, the chief investigator in the trial says there are hints from studies done in mice that combinations of vaccines might actually give a better overall immune response.
The study will look at people 50 and over who’ve already had their first dose of the COVID vaccine.
Right now, more than 800 people are involved in the research.
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