Public health strategies, from vaccination to improving sanitary conditions, may have different impacts depending on whether a disease is endemic—persisting in a particular location for an extended ...

SAN FRANCISCO -- As California becomes the first U.S. state to adopt an "endemic" approach to COVID-19, we take a closer look at what becoming "endemic" means and if virus levels have truly ...

An international team of researchers has demonstrated that the tetravalent dengue vaccine Qdenga provides significant protection against the disease under real-world conditions, during the large 2024 ...

An outbreak of measles being reported at the Dilley children and family detention center in Texas highlights a nationwide ...

Measles is one of the most infectious diseases on the planet. Kateryna Kon/Science Photo Library via Getty Images From 2000 to 2010, less than 100 measles cases were reported each year in the U.S.

In 2025, health authorities worldwide tracked numerous infectious disease outbreaks spanning vector-borne diseases, water-borne threats, vaccine-preventable illnesses, and zoonotic spillovers.

Add Yahoo as a preferred source to see more of our stories on Google. The Epidemic Intelligence Service has produced a cadre of highly trained public health experts over its 74-year history.

On 1 February 2016, the World Health Organisation (WHO) declared a Public Health Emergency of International Concern (PHEIC) ...

Mountain pine beetle outbreaks are expanding into lower-elevation ponderosa pine forests in Colorado. The dead, red trees resulting from beetle infestations increase the risk and severity of wildfires ...