Winter Illnesses Surge Across the U.S.: Flu, RSV, and Norovirus on the Rise

Respiratory illnesses, including influenza, COVID-19, and respiratory syncytial virus (RSV), are surging across the United States, according to the Centers for Disease Control and Prevention (CDC). Additionally, a novel strain of the highly contagious norovirus is contributing to a rise in cases of gastrointestinal illness.

Respiratory Illnesses: Flu, COVID-19, and RSV

The CDC reports a sharp increase in influenza cases, with activity projected to remain high throughout the winter. COVID-19 and RSV levels are also elevated, with RSV being a leading cause of hospitalization for respiratory illness, especially in children under 5 and older adults.

RSV is particularly concerning for infants under six months, as it can lead to severe bronchiolitis, an inflammation of the small airways in the lungs. COVID-19 emergency visits remain lower than those for flu and RSV but are gradually increasing.

Norovirus: The “Winter Vomiting Disease”

A novel strain of norovirus, GII.17[P17], is driving an increase in gastrointestinal illness outbreaks. Norovirus is highly contagious and spreads easily in enclosed spaces such as nursing homes, schools, prisons, and cruise ships. It causes symptoms like severe diarrhea and vomiting and can persist on surfaces for extended periods.

Protecting Yourself From Winter Illnesses

To reduce the risk of infection, the following measures are recommended:

Vaccination

• Vaccines for COVID-19 and influenza remain the most effective way to prevent severe illness. RSV vaccines are currently available only for specific populations.

Antiviral Medications

• Medications like Paxlovid (for COVID-19) and Tamiflu (oseltamivir, for flu) can reduce the severity of illness if prescribed early.

Hygiene Practices

• Wash hands thoroughly and frequently, particularly before meals or after being in public spaces. Handwashing is especially important for norovirus, as it is more resistant to alcohol-based sanitizers.
• Use sanitizing sprays or foams to reduce the spread of respiratory viruses.

Avoidance Measures

• Wear a well-fitting mask in crowded spaces during peak illness season.
• Stay home if you are feeling unwell to prevent spreading illness to others.

Takeaway

This winter, respiratory illnesses and norovirus outbreaks are affecting communities nationwide. While case levels are high, they align with trends seen in past years. Vaccination, proper hygiene, and precautionary measures remain critical to protecting yourself and others from illness during this season.

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