Flu Activity Increases Earlier This Season

Why it matters locally: California public health officials are monitoring the early rise in flu cases, which could place an earlier burden on the state's healthcare system compared to previous years.

Influenza activity has shown an earlier increase this year, with initial reports indicating a rise in cases during September. This trend precedes the typical start of flu season, which generally occurs in October or November. Public health agencies monitor seasonal influenza patterns. They observe the circulation of influenza viruses and track reported illnesses. The current data points to a shift in the expected timeline for influenza's emergence.