Q: Is it infectious during the incubation period?

　　A: It beocmes infectious at the end of the incubation period and is highly contagious 3 to 5 days after the onset. The infection period is longer in people with pneumonia and immune deficiency.

　　Q: What symptoms may be precursors to influenza A infection?

　　A: 1) Sudden hyperthermia and obvious intolerance of cold; 2) severe headache and body aches; 3) lasting fatigue and weakness; 4) chest pressure.

　　Q: How to treat it after one has been infected?

　　A: Self-quarantine is the first step to avoid infecting people around. Non-high-risk population can stay at home, use some antipyretic and analgesic drugs and medicines that relieve coughing, nasal congestion, and a runny nose and get plenty of rest and water.

　　Q: Which groups are high-risk population?

　　A: 1)The elderly over 65; 2) children below 5; 3)people with chronic diseases or immune deficiency; 4)pregnant women and women within two weeks after delivery; 4) obese people(BMI> 30).

　　Q: When do people need medical help?

　　A: People who have a persistent high fever, shortness of breath, aggravation of underlying diseases, etc. should should go to the hospital in time. Elderly people with underlying diseases who have a fever, cough, headache and fatigue symptoms should go to the hospital for timely treatment.