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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.

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PHOTO: The Center for Disease Control (CDC) headquarters in Atlanta, Georgia, US, on Friday, Dec. 5, 2025.
Megan Varner/Bloomberg via Getty Images

CDC says measures in place to 'assess' travelers from Russian region where plague was reported

PHOTO: In this Oct. 24, 2025, file photo, a vial of the Measles, Mumps, and Rubella (MMR) vaccination for children is displayed during an immunization event in Los Angeles.
Patrick T. Fallon/AFP via Getty Images, FILE

Health officials report 74 new measles cases in Pennsylvania

PHOTO: A person receives a vaccination.
Adobe Stock

What vaccines doctors say you may need for respiratory virus season

PHOTO: The logo of the World Health Organization is seen at the WHO headquarters in Geneva, Switzerland, Jan. 28, 2025.
Denis Balibouse/Reuters, FILE

WHO officials say unclear how Russia plague lab worker died, call for more information

PHOTO: New York Governor Kathy Hochul speaks during a news conference, Oct. 2, 2026, in New York.
Yuki Iwamura/AP Photo

New York declares state disaster emergency over rising measles cases. Here's what that means

PHOTO: Kenya Health minister Aden Duale speaks to journalists as he announces the first case of Ebola virus in Kenya, Nairobi, Oct. 6, 2026.
Andrew Kasuku/AP Photo

Kenya records 1st Ebola death after man travels between several countries

PHOTO: Measles virus particle, illustration.
Kateryna Kon/science Photo Library/Getty Images

Measles cases surpass 1,000 in Pennsylvania amid the state's largest outbreak in decades

PHOTO: Flu virus, illustration
STOCK IMAGE/Getty Images

San Francisco records 1st flu-related death as season begins

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

Trump administration begins mailing out $500 ACA refund checks. Here's what to know

PHOTO: A women in a hospital gown talks to a doctor in this undated photo.
Getty Images

What to know about your breast cancer risk as Breast Cancer Awareness Month kicks off

PHOTO: Close-up of a mosquito biting human skin.
Joao Paulo Burini/Getty Images

As dengue continues to rise in Florida, some are worried about underreporting of cases

PHOTO: Governor Gavin Newsom is pictured during a recorded interview with AFP in the Manhattan borough of New York City on September 23, 2026.
Charly Triballeau/AFP via Getty Images

What to know about California's new ultra-processed foods label law

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