It’s spreading fast.
Norovirus, a highly contagious gastrointestinal illness, is rapidly spreading across the United States this winter, according to the latest data from the U.S. Centers for Disease Control and Prevention (CDC).
The CDC reports a sharp increase in outbreaks, with 91 recorded during the week of December 5, compared to 69 the previous week. Historically, the first week of December typically sees no more than 65 outbreaks in recent years.
Commonly known as the “stomach flu,” norovirus leads to sudden vomiting, diarrhea, and other digestive symptoms. The virus is especially prevalent in crowded environments, including nursing homes, schools, correctional facilities, and cruise ships. This surge follows a significant outbreak that affected over 300 people aboard three different cruise ships earlier this month.
Norovirus spreads quickly through close contact with infected individuals or by consuming contaminated food, water, or touching contaminated surfaces. Sharing food, drinks, or utensils with an infected person also increases the risk of transmission.
Symptoms typically appear between 12 to 48 hours after exposure and can last from one to three days. While most individuals recover fully, dehydration from vomiting and diarrhea can pose serious health risks, especially for young children, the elderly, and those with compromised immune systems.
To prevent infection, health experts recommend frequent handwashing with soap and water for at least 20 seconds, particularly before meals. Disinfecting commonly touched surfaces with household cleaners also helps reduce the risk of contamination.
In cases of dehydration—evidenced by dry mouth, dizziness, or reduced urination—it’s important to seek medical attention. Staying hydrated by drinking water is crucial, while beverages like coffee, tea, and alcohol should be avoided as they can exacerbate dehydration.
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