What is INFLUENZA?
What is INFLUENZA?
- Seasonal influenza is a respiratory tract infection caused by the influenza virus!
- Commonly there are two flu seasons in Hong Kong:
- Winter epidemic (Around January to March)
- Summer epidemic (Around July to August)
- After a person is infected, the symptoms of influenza typically take 1-4 days to appear . The disease is usually self-limiting with recovery in 2-7 days.
- Infected persons may pass the viruses to other people 1 day before and up to 5-7 days after they develop symptoms.

If I got Influenza, Signs and symptoms could be:
- Fever (Body temp. at or higher than 37.8℃)
- Headache
- Fatigue
- Muscle pain
- Cough
- Sore throat
- Runny nose