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Health & Science Reporter

Mary Kekatos

Mary Kekatos is on ABC News. Get Mart Kekatos's latest news stories and articles, connect with millions of users and join the conversation at ABC News.

Mary's Latest Work

PHOTO: Legionnaire's Disease bacterium is seen in this stock photo.
Bsip/uig/Getty Images/Universal Images

Legionnaires' disease cluster in New York City grows to 54 cases

PHOTO: Cyclospora cayetanensis is a unicellular parasite that causes an intestinal infection called cyclosporiasis.
CDC

Here's where cyclosporiasis is spreading as cases are confirmed in 32 states

PHOTO: Cyclospora cayetanensis is a unicellular parasite that causes an intestinal infection called cyclosporiasis.
CDC

Cyclosporiasis symptoms, treatment and how it's spread: Everything to know about the intestinal parasitic disease

PHOTO: Cyclospora cayetanensis is a unicellular parasite that causes an intestinal infection called cyclosporiasis.
CDC

Cyclosporiasis cases top 1,200 in Michigan, health officials say

PHOTO: Legionnaire's Disease bacterium is seen in this stock photo.
Bsip/uig/Getty Images/Universal Images

Nearly 2 dozen sickened in Legionnaires' disease cluster in New York City

PHOTO: Cyclospora cayetanensis is a unicellular parasite that causes an intestinal infection called cyclosporiasis.
CDC

Cases of parasitic infection growing in 2 states: Health officials

PHOTO: Secretary of Health and Human Services Robert F. Kennedy Jr. listens during a news conference at the at the Robert F. Kennedy Department of Justice building on June 23, 2026 in Washington, DC.
Anna Moneymaker/Getty Images

RFK Jr. has promoted using beef tallow over seed oils but the animal fat may not be healthier, some cardiologists say

PHOTO: Cyclospora cayetanensis is a unicellular parasite that causes an intestinal infection called cyclosporiasis.
CDC

'Large and growing' parasitic infection outbreak spreading in Michigan, health officials say

PHOTO: US passengers from the Dutch flagged hantavirus-stricken cruise ship MV Hondius are transferred by boat to the industrial port of Granadilla de Abona on the island of Tenerife in Spain's Canary Islands on May 10, 2026.
Jorge Guerrero/AFP via Getty Images

Hantavirus outbreak linked to cruise ship over after last contact completes quarantine: WHO

PHOTO: Multi-ethnic group of school children run during physical education class at school gym.
STOCK PHOTO/Adobe

Will the return of the Presidential Fitness Test improve kids' physical activity levels?

PHOTO: A combination image shows an injection pen of Zepbound, Eli Lilly's weight loss drug, and boxes of Wegovy, made by Novo Nordisk.
Hollie Adams/Brendan McDermid/Reuters

Eligible seniors can get GLP-1s for $50 a month for weight loss alone

PHOTO: The healthcare.gov website on a laptop arranged in Norfolk, Virginia, Nov. 1, 2025.
Stefani Reynolds/Bloomberg via Getty Images

About 3 million fewer people are enrolled under ACA compared to last year: Report

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