California health systems are reporting an early surge in influenza cases, with regional emergency department visits currently outpacing national trends. As respiratory virus activity rises, medical experts are providing guidance on seasonal health challenges to help residents prepare for the coming months.

Why is the flu season starting early?

Data indicates that flu activity in California is running weeks ahead of a typical season. For the week ending October 3, influenza-like illness accounted for 2.77% of emergency department visits in the state, which is higher than the 1.85% national average.

At Kaiser Permanente, flu positivity rates in mid-October are reportedly resembling figures usually seen in early December. This early uptick is forcing health systems to expand treatment capacity and increase clinical staffing earlier than historical norms.

How to maintain seasonal health

Medical professionals suggest several strategies for staying healthy during this transition. To combat the spread of viruses, experts recommend:

  • Getting annual vaccinations for influenza, COVID-19, and RSV.
  • Washing hands regularly with soap and warm water for at least 20 seconds.
  • Prioritizing sleep and physical activity to build stamina.
  • Managing stress, particularly for children returning to school.

Regarding seasonal health, Ethan Youssefzadeh, a family medicine doctor with Cedars-Sinai, notes that less exposure to natural light can affect energy levels. He recommends getting natural light early in the day and maintaining a consistent sleep schedule.

Vaccination recommendations

While the CDC has not issued updated recommendations for the 2026-27 season due to ongoing litigation, leading medical societies have issued joint guidance. The influenza vaccine is recommended for everyone six months and older.

For COVID-19, adults 19 and older should receive an annual vaccine, while those over 65 should receive a shot every six months. The RSV vaccine is specifically recommended for women in their first eligible pregnancy between September 1 and March 1.

FAQ

When should I get my flu shot?

The CDC recommends getting vaccinated in September or October, ideally before the end of October.

Can I get multiple vaccines at once?

Yes, some vaccines can be administered during the same visit, though some doctors suggest separating them by a week for elderly patients.