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Should I get a COVID-19 vaccine if I’ve had the virus?

It’s impossible to know how long a person might be immune

FILE - In this Tuesday, Jan. 5, 2021, file photo, a healthcare worker receives a second Pfizer-BioNTech COVID-19 vaccine shot at Beaumont Health in Southfield, Mich. New research suggests that Pfizers COVID-19 vaccine can protect against a mutation found in two contagious variants of the coronavirus that erupted in Britain and South Africa. Those variants are causing global concern. They both share a common mutation called N501Y, a slight alteration on one spot of the spike protein that coats the virus. That change is believed to be the reason they can spread so easily. (AP Photo/Paul Sancya, File) (Paul Sancya, Copyright 2021 The Associated Press. All rights reserved)

Should I get a COVID-19 vaccine if I’ve had the virus?

Yes. Regardless of previous infection, the U.S. Centers for Disease Control and Prevention says people should plan on getting vaccinated when it's their turn.

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“It’s a pretty straightforward question,” said Johns Hopkins infectious disease specialist Dr. Amesh Adalja. “Yes, you need to get vaccinated.”

After someone recovers, their immune system should keep them from getting sick again right away.

“Your immune system is able to identify the virus, and protect itself,” said Dr. Saskia Popescu, an infectious disease expert at George Mason University.

Scientists still don’t know exactly how long this immunity lasts or how strong it is, though recent research suggests the protection could last for several months.

It’s impossible to know how long a person might be immune, said Dr. Prathit Kulkarni, an infectious disease expert at Baylor College of Medicine. “There’s no way to calculate that.”

Vaccines, by contrast, are designed to bring about a more consistent and optimal immune response. And they should boost whatever preexisting immunity a person might have from an infection, experts say.

“Since we’re in this pandemic, and don’t have a handle on it, the safer approach is to vaccinate,” Kulkarni said. “You don’t lose anything and you stand to benefit.”

If you’ve been infected in the last three months, the CDC says it's OK to delay vaccination if you want to let others go first while supplies are limited.

“All things being equal you would want the person with no protection to go first,” Adalja said.

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The AP is answering your questions about the coronavirus in this series. Submit them at: FactCheck@AP.org.

Read previous Viral Questions:

If I’ve already had the coronavirus, can I get it again?

How quickly do I need a second COVID-19 vaccine shot?

Can I stop wearing a mask after getting a COVID-19 vaccine?


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