Five second-dose COVID-19 vaccine questions answered

Ryan Stewart
For The Oklahoman
With all Oklahomans now eligible to receive the COVID-19 vaccine, second shots are ramping up, and with them, concerns about the follow-up dose's side effects.
Experts at the Oklahoma Medical Research Foundation offer answers to five questions on the second shot to the arm.
1. How does the second dose differ from the first?
"It doesn't," said OMRF immunologist Eliza Chakravarty, M.D. "The dosage is the same, and chemically, Pfizer and Moderna's second shots are identical to their first."
It's what the second dose does inside your body that is different, Chakravarty explained.
"The first shot teaches your body to recognize the virus. The second further instructs the immune system to remember the virus and make a stronger, more focused response if it sees it again."

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