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FACT FINDERS: Can you mix and match vaccines?

Updated: Jan. 6, 2021 at 10:39 PM MST
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TUCSON, Ariz. (KOLD News 13) - Now that we are starting to give out the second doses of the vaccine in Arizona, many KOLD viewers ask about mixing and matching the vaccines.

For example, can you take the Pfizer vaccine as a first dose and the Moderna second?

Right now, it is not recommended you mix and match the vaccines. Experts said they are not meant to be used that way.

[ FACT FINDERS: Should you get vaccinated when you have COVID-19? I FACT FINDERS: How many COVID-19 vaccine doses will Arizona get this week? ]

However, you may have seen recent reports from Britain saying they just changed their guidance on the topic. According CTV, Britain now allows using different vaccines for the first and second doses in rare cases.

The Pima County Health Department website has the following to say about mixing vaccines.

“Currently, the CDC recommends both doses of the series should be completed with the same product,” the PCHD said on its website.

“While the CDC’s Advisory Committee on Immunization Practices does not state a preference between the Pfizer and Moderna products, they do state these mRNA COVID-19 vaccines are not interchangeable with each other or with other COVID-19 vaccine products. The safety and efficacy of a mixed-product series have not been evaluated.”

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