Pfizer studying long-term effect of COVID vaccine, potential booster shots


NEW HAVEN, Conn. (WTNH) — Pfizer’s CEO says a booster COVID-19 shot will likely be needed for patients within 12 months of the two-shot regimen. We spoke with a Yale infectious disease expert about the possibility after the announcement was made Thursday.

RELATED: Pfizer CEO: 3rd shot ‘likely’ needed within a year

Pfizer is still in the process of studying how long the vaccine’s protective immunity will last. But experts say, if you have received your vaccine, you should prepare yourself for the booster.

Pfizer’s CEO announced, aside from the third shot within the year of the two-shot regimen, you may need subsequent annual shots for continued immunity.

Pfizer’s vaccines, in addition to high-efficiency rates, have proven to be effective against some of the COVID variants that have surfaced in recent months.

We spoke with Yale infection disease prevention doctor, Scott Roberts about the news. He says vaccien providers are working ahead to address the issues that may come.

“Ultimately we don’t have a full understanding of how long immunity will last under the current vaccination. A few recent studies did show that patients that do receive the vaccine have immunity for up to six months at least and we will get more information as time goes on.”

RELATED: As more get vaccinated against COVID, will we eventually need another shot?

Governor Ned Lamont weighed in on the announcement from Pfizer saying, “I don’t think I’m shocked, we’ve been having annual flu vaccines since I was a kid. We’ve certainly talked to Pfizer and Moderna and J&J about how these different variants, how they can customize the booster shot depending on the nature of the virus that may be in one community or one state versus another.”

Moderna is also looking at an upgraded version of their vaccine – one that would look like combining the flu shot and the COVID shot in one single booster.

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