Three Cases of Mpox Strain Tied to Severe Illness Worry Health Experts

None of the patients, all California residents, had traveled abroad, suggesting the Clade 1 virus strain was transmitted locally.

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How a Long Island Woman Was Diagnosed With Chikungunya

A Long Island woman had no idea what had hit her. Her pursuit of an answer led to a mosquito-borne disease rarely seen in the United States.

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New York Confirms State’s First Locally Acquired Case of Chikungunya

Testing proved that a Long Island woman had been exposed to the mosquito-borne virus, which is more commonly seen in the Caribbean and Central and South America.

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Mosquito-Borne Illness Rarely Seen in U.S. Is Suspected on Long Island

Chikungunya, which is endemic in parts of South America, Africa and Asia, may be the cause of a woman’s illness.

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Scientists Begin Testing Bird Flu Vaccine in Seals

If the results are promising, veterinarians hope to give the shots to wild Hawaiian monk seals, which are endangered.

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Cases of Mosquito-Borne Chikungunya Virus Are Surging Globally: What to Know

Chikungunya, which can disable victims for years, is spreading rapidly, including in China and other places that have not seen it before.

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Rabbits With Hornlike Growths Are Hopping Around Colorado. Are They OK?

The unsightly bunnies are infected with cottontail rabbit papillomavirus, which can cause growths that resemble warts or tentacles.

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Bird Flu May Be Airborne on Dairy Farms, Scientists Report

In unpublished research, researchers found live virus on equipment, in wastewater and in the air in so-called milking parlors.

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Shining a Light on the World of Microproteins

From viruses to humans, life makes microproteins that have evaded discovery until now.

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Used in Covid Shots, mRNA May Help Rid the Body of H.I.V.

A new study shows how the technology deployed in Covid vaccines helped scientists coax the virus out of hiding.

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