The influenza (flu) season in the United States lasts from October through May, with peak flu activity between December and March.
The U.S. Centers for Disease Control and Prevention (CDC) estimates that 47 million to 82 million flu illnesses occurred during the 2024-25 season. Data suggested that flu activity was at its highest level in more than 15 years.
Flu season in the Southern Hemisphere often indicates what’s to come in the United States. Data revealed higher hospitalizations during the 2025 flu season in the Southern Hemisphere. With the potential for this year’s flu season to be severe in the United States, vaccination remains the most effective way to prevent the flu, especially severe disease and hospitalization.
How to Stay Healthy
The flu can cause serious complications for people of any age, but children and older adults are especially vulnerable. To help keep your household healthy this flu season, consider these tips:
- Get vaccinated. The CDC recommends that nearly everyone aged 6 months and older get a flu shot every year.
- Avoid close contact with people who are sick and stay away from others when you feel unwell. Flu, cold and COVID-19 symptoms are similar, so doctors say it’s best to get tested to determine what you have.
- Wash your hands often using soap and warm water. If those are unavailable, use an alcohol-based hand sanitizer.
- Cover your mouth and nose when coughing or sneezing.
- Get seven to nine hours of quality sleep each night to boost your immune system.
- Exercise regularly to strengthen your body and make it more resilient against infections.
- Stay hydrated and eat a balanced diet.
Experts recommend getting vaccinated against the flu by the end of October, so don’t delay getting your shot. Contact your doctor today to learn more.
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