Welcome to Public Health On Call, a podcast from the Johns Hopkins Bloomberg School of Public Health.

I'm Joshua Sharfstein, Vice Dean for Public Health Practice and Community Engagement,

and a former health commissioner here in Baltimore.

Our goal is to bring evidence and experience to illuminate critical public health issues.

If you have questions or ideas for us, please send an email to public health question at jhh.edu.

That's public health question at jh.hu.edu for future podcast episodes.

Hi, this is Lindsay Smith-Rogers, producer of public health on call, and today, everything

you wanted to know about COVID rebounds, but we're afraid to ask.

Well, actually, you weren't afraid to ask because you sent us your questions.

Dr. Amish Adalja returns to the podcast to talk to Dr. Sharfstein and answer them all. Let's listen.

Dr. Amish Adalja, thanks so much for coming to public health on call again to take some questions from our listeners. How are you doing today?

I'm good. Thank you for having me.

I'm sure it's a busy time for people who are quadruple boarded in internal medicine,

emergency medicine, intensive care, and infectious disease with COVID still going on and monkey pox

on the rise. Are you keeping busy? Yeah, it's always something. If you have four specialties,

all of them are going to, one of them is always going to have some issue going on with it.

Yeah, and sometimes more than one.

So let's jump in.

You've kindly agreed to answer a bunch of questions coming in about rebound infections with COVID.

Let's start with those.

Could you just explain the difference between reinfection, a new

infection, COVID rebound? What are these different terms referred to?

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