How is Influenza A transmitted?
Disease description:
My spouse and I are both working professionals. Recently, during the flu season, many colleagues at work have contracted influenza A. We would like to know how influenza A spreads, so that we can take effective protective measures to safeguard each other's health.
Doctor's answer (1)
Dr. Ren Yi
Influenza A, also known as Type A flu, is an acute respiratory infectious disease caused by the Influenza A virus. It spreads through various routes, mainly including respiratory droplets, contact transmission, and aerosol transmission.
1. Respiratory droplet transmission: This is a common route for Influenza A transmission. When an infected person coughs, sneezes, or talks, droplets containing the virus are released. These droplets can remain suspended in the air and may be inhaled by healthy individuals, leading to infection. Therefore, the risk of infection is higher in crowded places such as schools and offices.
2. Contact transmission: Direct contact with respiratory secretions or bodily fluids of an infected person, such as nasal mucus or phlegm, can lead to infection. The virus can enter the body through mucosal areas such as the mouth, nose, and eyes after hand contact. Additionally, touching objects contaminated with the Influenza A virus, such as door handles or elevator buttons, may also result in indirect contact transmission.
3. Aerosol transmission: In relatively enclosed and poorly ventilated environments, the Influenza A virus may exist and spread in the form of aerosols. Aerosols are tiny suspended particles that can float in the air for extended periods and travel over long distances.
To prevent the spread of Influenza A, it is recommended to take the following measures: wash hands frequently, wear masks, maintain social distancing, avoid crowded places, enhance indoor ventilation, and receive annual influenza vaccination. If symptoms of Influenza A develop, seek medical attention promptly and follow the doctor's advice for treatment.
