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Health January 12

Researchers locked flu patients in a hotel with healthy adults — no one got sick

Groundbreaking flu transmission study reveals zero infections despite close contact between healthy volunteers and flu-positive students for two weeks.

Travel January 12

CDC reports first cruise norovirus outbreak this year, as nearly 90 people are infected

Nearly 90 passengers and crew fell ill with norovirus on Holland America's Rotterdam cruise ship during a Dec. 28-Jan. 9 voyage, according to CDC reports.

Health January 5

Flu hospitalizations hit all-time weekly high in densely populated state, officials warn

New York reports record flu hospitalizations and cases, with a rise of nearly 1,000 in a single week. Health experts urge immediate vaccination as a new variant spreads.

VIDEO December 31

Dead birds turning up on Florida beaches sparks fresh warnings about avian flu

A number of dead birds have been found on Florida beaches sparking fresh concerns about avian flu. (Credit: Fox Orlando)

Health December 24

Flu by state: Where this season’s highly contagious variant is spreading the most

A highly contagious flu mutation called subclade K is sweeping the nation, raising health concerns about vaccine effectiveness this season. Here are the states at most risk.

Health December 15

‘Aggressive’ new flu variant sweeps globe as doctors warn of severe symptoms

Flu season intensifies as the new H3N2 variant causes severe illness worldwide. Experts urge vaccination, hand-washing and staying home when sick to prevent transmission.

Travel December 8

CDC warns Americans traveling to 4 countries over outbreak of untreatable mosquito disease

Global chikungunya outbreak prompts health warnings as cases surge across tropical regions. WHO reports 155 deaths from mosquito-transmitted virus.

Health December 3

Lower dementia risk linked to routine vaccination in major new analysis

A Stanford Medicine study suggests that the shingles vaccine reduces dementia risk by 20% in older adults, offering the first evidence of a potential cause-and-effect relationship.

Health November 20

Doctors reveal troubling signs in early flu trends, warn of ‘unusually bad’ season

Health experts warn this flu season could be unusually severe, with early spread and concerning H3N2 strain activity across the U.S. following Australia's worst flu season.

Health November 19

First-ever human case of rare bird flu strain confirmed in western US

The country's first-ever H5N5 bird flu case has been confirmed in Washington state, where a resident is hospitalized with a rare avian influenza strain never before seen in humans.

Health November 13

Surge in whooping cough cases in southern state prompts health alerts

Texas reports nearly quadruple the whooping cough cases than last year, with over 3,500 infections. Health officials urge vaccination as pertussis spreads statewide.