Virus

The first fatalities in connection with the bacteria Vibrio vulnificus this year have been recorded.

The Epstein-Barr virus is one of the most common and persistent human viruses in the world, according to the CDC.

One-in-six patients treated with the modified virus as part of a clinical trial saw their tumors disappear completely.

The U.S. has seen more measles cases in 2025 than in any year since the virus was declared "eliminated" in 2000.

Scientists found over 20 new bat viruses in China—including two linked to deadly henipaviruses.

"These viruses are so closely related to MERS, so we have to be concerned if they ever infect humans," said virologist Michael Letko.

Ellie Harrison told Newsweek that HIV, if treated properly, "does not need to be a huge part of your life."

One travel-related case of Zika virus has been confirmed in Oahu, with two other individuals potentially exposed.

The risk to the public is low at this time, health officials have said.

Ahead of Spring Break this year, infectious disease experts are sounding the alarm about the potential spread of measles.

USDA confirms H5N1 bird flu in four black rats in Riverside County, California amid growing mammal infections.

Consumers can safely drink pasteurized milk, despite reports of dairy cattle infected with the new strain of bird flu.

A law professor has explained why Trump and Musk's plans to move USAID to State Department are not set in stone.

Uganda's health authorities say they are in "in full control of the situation," and are working to contain the outbreak.

The first U.S. H5N9 outbreak has raised concerns as scientists warn of evolving bird flu risks—here's what you need to know about the symptoms.

U.S. authorities also identified the more common H5N1 strain on the same farm in Merced County, California.

Latest data shows which counties have been hardest hit by bird flu outbreaks among poultry flocks as the human case count climbs.

The family-owned farm is the latest victim of the deadly outbreak hitting poultry, dairy herds and people across the nation.

"The Chinese poultry lineage may have experienced more vaccine-driven selection compared to other lineages," the researchers wrote.

"The wastewater viral activity levels may indicate the risk of infection in an area," the CDC explains.

6.6 percent of all COVID-19 tests across the country came back positive, but Illinois, Indiana, Michigan, Minnesota, Ohio and Wisconsin had an 8.9 percent rate.

Avian influenza A (H5N1) has mutated, so the symptoms of bird flu could change as more people get sick in 2025.

If you have fevers, coughs, headaches, chills, runny nose or body aches, you may have influenza.

Twenty states (plus D.C.) had "very high" levels of the virus present in wastewater, an increase from 16 states the week before.

Illinois, Indiana, Michigan, Minnesota, Ohio and Wisconsin had the highest rates, with 9.2 percent of tests coming back positive.

With more than 133 million poultry birds affected by avian influenza across the U.S., some states are experiencing egg shortages.

Some fear the human metapneumovirus outbreak in China could spark a pandemic, much like coronavirus.

The WHO has downplayed concerns over a rise in HMPV cases, saying outbreaks are normal during winter in the Northern Hemisphere.

The World Health Organization has released a statement on the reported outbreak of human metapneumovirus in China and elsewhere.

Some 16 states had "very high" levels of the virus present in wastewater during the week of Christmas, an increase from the week before.