The latest data on U.S. COVID-19 test positivity rates shows a complicated picture as we head towards the new year.

Six U.S states all saw "very high" levels of COVID-19 viruses in their wastewater in the first week of December, says the CDC ...

Data from the Centers for Disease Control and Prevention show cases of norovirus, the highly contagious stomach bug, are surging in parts of the U.S.

The virus in the first severe human bird flu case in the U.S. was found to have mutated. Newsweek's live blog is closed.

Since April 2024, 61 human cases of bird flu have been reported in the U.S. The virus has only spread from animals to humans ...

Public health officials have just reported the first known “severe” case of bird flu in the United States. There are now 61 ...

Oropouche virus has posed little threat outside South America in the past, but land-use change, the climate crisis, and ...

The bird flu outbreak has spread to all 50 states, these maps show. Here are the symptoms and what to do if you think you ...

Each year, there are about 2,500 reported outbreaks of norovirus -- often referred to as a "stomach bug," "stomach flu" or ...

Since April 2024, 61 human cases of bird flu have been reported in the U.S. The virus has only spread from ... birds in 569 counties and all 50 U.S. states, according to the CDC.