Skip to main content

COVID-19 transmission among the fully vaccinated is rare, but possible, experts say. Here’s why.

As the country confronts a massive surge of coronavirus cases, fully vaccinated Americans worry whether they’re adequately protected. As masking recommendations for the vaccinated change, one aspect of the transmissibility debate can be overlooked.

Cases of breakthrough infections among the vaccinated remain rare. In that event, health experts said, a fully vaccinated person who gets COVID-19 won’t be contagious for very long and may not have the chance to transmit the virus to another person.

A vaccinated person may have the same viral loads as an unvaccinated person, but that high level of virus lasts only three to four days compared with an unvaccinated person who could be contagious for up to 10 days, said Suresh Mittal, professor of virology at Purdue University’s College of Veterinary Medicine.

Read the full story on USA Today.

Writer(s): Adrianna Rodriguez | USA TODAY | pvmnews@purdue.edu

Recent Stories

CPB faculty member receives research journal publication award

Dr. Christopher Rice, assistant professor of parasitology in Purdue Veterinary Medicine’s Department of Comparative Pathobiology (CPB), has been honored as the recipient of the 2026 Jack L. Beal Award for a paper published in the Journal of Natural Products.  The journal, in partnership with the American Society of Pharmacognosy (ASP) and American Chemical Society (ACS), announced in September the recipients of the Beal Award and two other research awards – the Arthur E. Schwarting Award and the A. Douglas Kinghorn Award for Best Perspective or Review. The awards recognize the best papers published each year in the Journal of Natural Products.

“Paws Up” for Craig Weiderhaft – brought to you by the PVM Wellness Committee

This week we want to give a big “high five” to Craig Weiderhaft who is a phone communications and front desk representative at the Purdue University Veterinary Hospital.

Dogs across the Midwest find customized care at the Evan and Sue Ann Werling Comparative Oncology Research Center

Studying canine cancer — including personalizing treatments, honing protocols and exploring new drugs, all of which will shed light on human cancer care — is the focus of veterinary researchers at a specialized center at the Purdue University College of Veterinary Medicine.

Faculty and staff contributions move Purdue Veterinary Medicine toward goal for Purdue United Way Campaign

With the 2026 Purdue United Way Campaign in full swing, Purdue Veterinary Medicine faculty and staff participation is advancing the college toward its campaign support goal. At the halfway point of the campaign, figures show the college is nearly halfway to its goal of raising $20,000.

In Memory – Dr. Raymond E. Plue (PU DVM ’68)

The Purdue Veterinary Medicine community is deeply saddened by the passing of Dr. Raymond E. Plue, who was a generous, fun-loving, adventuresome and larger-than-life alumnus. Dr. Plue passed away Saturday, October 10, 2026, in Columbia, Missouri. He was 81.