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Stacey Rizza
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Sep 16, 2026
Stacey A. Rizza, MD, Medical Director for Global Commercial Solutions at Mayo Clinic International
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1:19Laura DiertaHOST
So we'll dig into all of that, but before we do, can you tell us a little bit more about yourself and Mayo Clinic's international practice?

Stacey RizzaGUEST
I'll begin with just a little bit about myself, and then I'd love to tell you about Mayo Clinic's international interest and our vision and our hopes with doing the work we're doing right now.

Stacey RizzaGUEST
I'm based out of the Mayo Clinic based in Rochester, Minnesota, and I've been with Mayo Clinic for a little over 20 years now.

Stacey RizzaGUEST
Like many of us in academic medicine, I've had the privilege of working in not just clinical medicine, but also working in education and in research.

Stacey RizzaGUEST
My clinical interests have always been in HIV and transplant infectious disease, as well as tuberculosis and some of the viral hepatitis work, and those are the areas where I've had the opportunity to do some research work, and then I've been able to work in administration within Mayo's education shield as well.
10 MINS LATER
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12:40Laura DiertaHOST
How are some of the new technologies changing the field of infectious disease from your perspective?
Vector-Borne Illnesses
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4:39Darrell ChutkaHOST
Uh, can you give us maybe a brief summary of this one and maybe its clinical manifestations?

Stacey RizzaGUEST
So Zika virus is what we would call a flavivirus, which is just the family of viruses that it's in, and it's transmitted by a mosquito, in particularly is the Aedes mosquito, which is prevalent all over the United States, as well as Central America, the Caribbean, South America, some parts of Southeast Asia, and even some parts of Africa.

Stacey RizzaGUEST
And when it bites a human, in the vast majority of cases, about 80% of the time, it'll cause an asymptomatic infection.

Stacey RizzaGUEST
So if a person becomes infected with it and the person is young and healthy and not immunocompromised, most likely they'll never even know they had the infection.
9 MINS LATER
Update on Lyme Disease
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16:46Darrell ChutkaHOST
What about the concept of chronic Lyme? Does it exist and what is it? What do we do about it?

Stacey RizzaGUEST
So I'm going to give a very short answer and then I'm going to explain myself.

Stacey RizzaGUEST
So you asked, does chronic Lyme exist? And in that form of the question, my answer is no.

Stacey RizzaGUEST
It can cause what we call a subacute infection over weeks or months, and it can cause some long-term effects if it goes untreated.

Stacey RizzaGUEST
But once it is diagnosed and treated, there is no chronic form of the infection.
Ebola Virus
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Stacey RizzaGUEST
And it's something that I think we're even more attuned to now since the whole world has been through a pandemic is And most people who didn't think about infectious diseases as often as I do are now far more aware of it, particularly viral infections.

Stacey RizzaGUEST
So the recommendation we give is to first acknowledge the person's concerns, justify why they would be concerned, why they would be thinking about this, acknowledge that this can always be on somebody's mind, particularly if they hear about a new virus that's popping up or a new spread of the virus that they may have even heard of before.

Stacey RizzaGUEST
But then I think it's important to very early on distinguish the difference between Ebola and the kind of viruses that can cause pandemics.

Stacey RizzaGUEST
But I think it's even more important to compare Ebola to the virus people have lived through recently, which is COVID.