World Health: Seasonal Flu Activity Rising Globally
News Context
At a glance
- The Global health Institution has reported an increase in seasonal influenza cases globally.
- Activity has increased, notably with the seasonal influenza A(H3N2) virus.
- This increase coincides with the beginning of the winter season in the Northern Hemisphere, a time when acute respiratory infections typically rise.
Seasonal Influenza Update – December 2025
The Global health Institution has reported an increase in seasonal influenza cases globally. This is an acute respiratory infection caused by influenza viruses that spread throughout the year.
Activity has increased, notably with the seasonal influenza A(H3N2) virus. The severity of the disease ranges from mild to severe,and can sometimes lead to hospitalization or death.
This increase coincides with the beginning of the winter season in the Northern Hemisphere, a time when acute respiratory infections typically rise. While global activity remains within expected seasonal ranges, some regions are experiencing earlier and higher-than-normal activity.
Key Facts:
| Fact | Details |
|---|---|
| Reporting Organization | Global Health Organization |
| Type of Illness | Seasonal Influenza (acute Respiratory Infection) |
| dominant Strain | Influenza A(H3N2) |
| Severity | Mild to Severe (potential for hospitalization/death) |
| Seasonality | Increased activity during Winter in the Northern Hemisphere |
| Global Trend | Within expected seasonal ranges, but some regions show early/higher activity |
Seasonal influenza viruses are constantly evolving.