China to Expect Early Flu Season as Cases Surge Nationwide

Flu activity is rising across China, the Chinese Center for Disease Control and Prevention said, as experts warned that this year's flu season could arrive earlier and hit harder than usual.

Latest national data shows an uptick in cases across southern provinces, mirroring trends in Japan, where the flu season started more than a month earlier than usual. Similar increases have also been reported in the United Kingdom, Germany, and Italy, Shanghai Television reported on Tuesday.

"This year's main strain is influenza A (H3N2), replacing last year's dominant A (H1N1)," said Li Tongzeng, chief physician at Beijing You'an Hospital. "With lower population immunity to H3N2, we can expect more infections and potentially a more severe flu season."

Influenza, an acute respiratory infection caused by flu viruses, is typically self-limiting but can lead to serious complications such as pneumonia, meningitis, myocarditis and multiple organ failure in severe cases, health experts said.

Clinically, H1N1, H3N2, and influenza B typically cause fever, cough, sore throat, muscle aches, fatigue, and headaches, while the common cold mainly triggers mild nasal symptoms. Experts urge anyone with sudden high fever or severe body aches to seek medical attention promptly.

China's National Health Commission recommends that everyone over six months of age, except those with contraindications, receive an annual flu vaccine. Officials said vaccination remains the most effective way to prevent infection and reduce community transmission.

Public health experts also stress the importance of everyday precautions, such as frequent handwashing, covering coughs, keeping indoor spaces well ventilated, and disinfecting high-touch surfaces. Maintaining a balanced diet, regular sleep, and moderate exercise can further help strengthen immunity during the flu season.