Swine flu, or H1N1 influenza, is a contagious virus that can cause severe respiratory illness. It is spread through close contact with an infected person or through contact with contaminated surfaces or objects. The amount of time a person can transmit the swine flu virus can vary, but typically it is two days before symptoms appear and up to seven days after symptoms begin.
The incubation period of the swine flu virus is generally two to seven days, meaning that a person can be contagious and transmitting the virus before they even know they are sick. Symptoms of swine flu can include fever, cough, sore throat, body aches, fatigue, and sometimes vomiting or diarrhea. People should avoid contact with anyone who has these symptoms.
Once a person is infected, the virus can remain contagious for up to seven days. The amount of time depends on the severity of the illness and how well the person is taking care of themselves. People with mild cases may be contagious for a shorter amount of time, while people with severe cases may be contagious for up to seven days.
It is important to remember that even after symptoms disappear, a person may still be contagious and able to transmit the virus. It is important to practice good hygiene and to continue to take recommended precautions, such as staying home from work or school and avoiding contact with others, for up to seven days after the symptoms have gone away.
In addition, people who have been in contact with someone who has had swine flu should also consider getting a flu shot. This can help protect them from getting sick and from spreading the virus to others.