STATEN ISLAND, N.Y. — Norovirus, also known as the stomach flu, rang in 2025 in a big way across the United States, and continues to surge. The highly contagious virus causes vomiting and diarrhea, and a record number of outbreaks have been reported for this time of year, according to recent data.

Most norovirus outbreaks occur when people who are already infected spread the virus to others by direct means, such as through sharing food or eating utensils.

Cases of norovirus are surging in parts of the United States this winter, according to data from to the Centers for Disease Control and Prevention, and with holiday gatherings set to continue this week,

Cases of norovirus are surging in the United States. It’s the country’s leading cause of foodborne illnesses but there have been even more outbreaks than usual recently — hitting schools, holiday gatherings and cruise ships.

LANDSTUHL, Germany - Cases of norovirus, a wretched and highly contagious stomach bug, are surging in parts of the United States and Europe this

Health experts told Newsweek about the threats posed by the viruses and shared the best ways to protect oneself.

Norovirus is a very contagious virus causing vomiting and diarrhea. It's not related to the flu despite being commonly referred to as 'stomach flu.'

Norovirus is on the rise in the United States, according to the CDC. The highly contagious virus can usually only lasts around 48 hours, South Dakota doctors say.

Norovirus is highly contagious and causes vomiting and diarrhea. But, in the overwhelming majority of cases, people recover with no lasting consequences.

Norovirus outbreaks are surging in the United States this winter, with 91 cases reported in early December, a significant rise from previous years, according to CDC data.

Norovirus can survive on surfaces for weeks, and health officials say the virus can defeat most household cleaners. The Centers for Disease Control and Prevention recommends using a bleach solution that you dilute with water.