Swine flu, also known as influenza A (H1N1), is a respiratory illness caused by the H1N1 virus. The virus is primarily spread through respiratory droplets, such as those produced when an infected person coughs or sneezes. These droplets can land in the mouths or noses of people nearby, or possibly be inhaled into the lungs.
The virus can also be spread by touching a surface or object that has the virus on it, and then touching one’s mouth, nose, or eyes. People who are infected with swine flu may experience symptoms such as fever, cough, sore throat, and body aches. In some cases, the virus can lead to more severe complications, such as pneumonia or bronchitis.
The Centers for Disease Control and Prevention (CDC) and its partners work to minimize the spread of influenza at swine exhibitions by suggesting measures such as proper ventilation, hand hygiene, and the use of personal protective equipment. However, the evidence does not provide detailed information on how the virus works at a molecular level or the specific mechanisms of transmission.