Nurse loads a syringe of COVID19 vaccine.jpeg

FILE - In this Tuesday, Sept. 21, 2021 file photo, a nurse loads a syringe with the Pfizer COVID-19 vaccine in Jackson, Miss. (AP Photo/Rogelio V. Solis)

LOUISVILLE, Ky. (WDRB) -- People across Kentuckiana are now getting Pfizer's COVID-19 booster shots, but many still have questions.

According to the Centers for Disease Control and Prevention (CDC), people age 65 and older, adults with underlying medical conditions, and those who work in high-risk settings should take the booster shot. 

Some are wondering if it's OK to mix vaccine types, for example whether or not someone who got the Moderna vaccine can take the Pfizer booster shot.

"So, the answer is no. Right now, we think that keeping people within the drug that they had up front is important because, again, you are boosting the immune impact and it's because the targets for each of those drugs is slightly different, then you may not get the full benefit," Dr. Joseph Flynn, chief administrative officer for Norton Medical Group, said.

Flynn said taking the same vaccination will provide maximum protection against the delta variant of COVID-19.

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