William Petri

William A. Petri, Jr., M.D., Ph.D. studies immunology and molecular pathogenesis of enteric infections and their consequences. The scope of research includes molecular parasitology of Entamoeba, innate immune host defense against Clostridium difficile, and in Bangladesh acquired immunity to Cryptosporidium. We study infections in mouse models, in humans (including clinical trials) and at the lab bench. Petri leads the PROVIDE study of the Bill & Melinda Gates Foundation that is exploring in Bangladesh and India the pathogenesis of enteric environmental dysfunction (EED) and its association with oral poliovirus and rotavirus vaccine failures, malnutrition and neurocognitive developmental delay. Petri has received from Governor Terry McAuliffe both the Commonwealth of Virginia Outstanding Faculty Award (2014) and the Outstanding Scientist Award (2017). He has been recognized at UVa with the Kadner Award for Graduate Teaching, the All-University Teaching, and Inventor of the Year Awards. Petri has served as President of the American Society of Tropical Medicine and Hygiene and Editor of Infection and Immunity, and is currently Associate Editor for PLoS Pathogens, Clinical Infections Diseases and Trends in Molecular Medicine. He has received the Oswald Avery Award of the Infectious Diseases Society of America, the Burroughs Wellcome New Investigator and Scholar Awards in Molecular Parasitology, and the Lucille P. Markey Scholar Award in Biomedical Research. He has served continuously since 1993 on advisory committees for the NIH. Bill Petri received the MD and PhD (Microbiology) degrees from UVA, did medicine residency at Case Western and returned to UVA for infectious diseases fellowship. He spends 3 months of every year caring for patients on the general medicine and infectious diseases services and the remainder is focused on research on infectious diseases, especially the molecular pathogenesis of diarrheal infections in children living in poverty in Bangladesh and the immunology of C. difficile infection in a mouse model and in patients at UVA hospital.

Mind and Body

Johnson & Johnson vaccine: Why it’s worth the minuscule risk

The benefits outweigh the risks.

ByWilliam Petri
the shot

How effective is the first shot of the Pfizer or Moderna vaccine?

A single dose is effective at getting the body on the path to immunity

ByWilliam Petri and The Conversation
Final phase

How and when will we know a coronavirus vaccine is safe and effective?

All signs point to a healthier 2021.

ByWilliam Petri
Positive news

Covid-19 vaccine: 9 reasons to be optimistic

Experts are confident there will be a vaccine next year.

ByWilliam Petri
Science

How long does Covid-19 stay in the body?

Are there places in the body where SARS-CoV-2 can hide from the immune system?

ByWilliam Petri
Science

7 drugs and therapies that could work for Covid-19

We are slowly figuring it out.

ByWilliam Petri
The latest

Here's what we know about Covid-19 recovery

ByWilliam Petri
Science

Are you immune to Covid-19 if you have the antibodies? 5 big answers

ByWilliam Petri
Science

6 questions about Covid-19 that are stumping physicians

How can so many people experience such mild symptoms and others quickly die from it?

ByWilliam Petri
Science

Do you have Covid-19 but aren't showing symptoms? A physician answers 5 questions

In general, having an infection without any symptoms is common. Perhaps the most infamous example was Typhoid Mary, who spread typhoid fever to other people without having any symptoms herself in the early 1900s.

ByWilliam Petri
Mind and Body

What are coronavirus symptoms? A doctor answers 4 essential questions

When do you need to call your doctor?

ByWilliam Petri
Science

Are you in danger of catching the coronavirus? 5 things you need to know

Will this spread?

ByWilliam Petri