Do fully vaccinated persons who also had COVID need a booster?

I'm fully vaccinated and I also had COVID. Do I need a booster? Booster shots have been authorized for all U.S. adults, and the government is urging people to get them. But what if you've already had COVID and the vaccine? NPR.org

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if you've already had a symptomatic case of COVID-19, do you really need a booster?

It's probably not a shock that scientists still aren't entirely sure. Boosters haven't been available all that long for most Americans, and the studies to understand just how necessary they are for everyone — let alone those who've been infected and vaccinated — still need to be done.

But scientists say their best guess is that, by all accounts, people with hybrid immunity already have better immunity than vaccinated people who never got COVID-19 or people who got COVID-19 but not the vaccine.

"It's fair to say that your immunity is likely going to be stronger so that the chance of getting sick, especially with the delta variant, is very, very low," says Dr. Duane Wesemann, an immunologist at Brigham and Women's Hospital and Harvard Medical School. ...