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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The Texas Measles Outbreak Is Over, Officials Say

The larger outbreak, which spread to New Mexico and Oklahoma, is still ongoing.

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Sudan Hit by Its ‘Worst Cholera Outbreak’ in Years, Medical Charity Says

International charities warned that, left unchecked, the disease’s spread might exacerbate similar outbreaks across the African region for weeks or months to come.

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Why Young Children May Not Get Covid Shots This Fall

Under Robert F. Kennedy Jr., federal officials may withdraw an endorsement for the vaccine in younger children.

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On Vaccines, RFK Jr. Has Broken Sharply With the Mainstream

While many officials and scientists embrace other parts of the secretary’s agenda, his stance on vaccines is alienating allies who fear a public health crisis.

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What to Know About Legionnaires’ Disease, Which Has Sickened 58 in NYC

The cases are most likely linked to a cooling tower in central Harlem, health officials said.

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What to Know About Legionnaires’ Disease, Which Has Sickened 22 in N.Y.C.

The cases are most likely linked to a cooling tower in central Harlem, health officials said.

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Canada’s Measles Cases Surpass U.S., Alberta Officials Push for State of Emergency

Some doctors in Alberta have criticized officials for not declaring a health emergency in the western province where measles infections are surging.

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What to Know About Hand, Foot and Mouth Disease

Here’s what to know about symptoms and treatment of the infection.

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U.S. Quietly Drafts Plan to End Program That Saved Millions From AIDS

PEPFAR, the campaign to end H.I.V. globally, would morph into an effort to detect disease outbreaks and sell American products, according to documents obtained by The Times.

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