The Flu Is Contagious Most healthy adults may be able to infect other people beginning 1 day before symptoms develop and up to 5 to 7 days after becoming sick. Children may pass the virus for longer than 7 days.
https://www.cdc.gov/flu/about/disease/spread.htm
You may also wonder how long it takes to get sick after you have been exposed and how long you are contagious when you have it. Flu Incubation Period The typical flu incubation period—the time between exposure and the start of symptoms—is between 24 hours and four days, with the average being two days.
https://www.verywell.com/flu-incubation-period-770308
You may be able to pass on the flu to someone else before you know you are sick, as well as while you are sick. Most healthy adults may be able to infect others beginning 1 day before symptoms develop and up to 5 to 7 days after becoming sick.
https://answers.webmd.com/answers/2000021/how-long-is-someone-with-the-flu-contagious
Remember that some people who get the flu may not have symptoms and can spread the virus too. Good hand washing, hygiene and getting the flu vaccine can help prevent getting the flu. This answer should not be considered medical advice... This answer should not be considered medical advice and should not take the place of a doctor’s visit.
https://answers.webmd.com/answers/2000021/how-long-is-someone-with-the-flu-contagious
Flu symptoms generally don't come on gradually. 1  More often, people describe the onset of flu as if they were hit by a truck.. You feel fine, and then suddenly, an hour later, you feel like you can hardly move. 2  We know that it is highly contagious and can be spread before you even have symptoms.
https://www.verywell.com/flu-incubation-period-770308
The Flu Is Contagious. Most healthy adults may be able to infect other people beginning 1 day before symptoms develop and up to 5 to 7 days after becoming sick. Children may pass the virus for longer than 7 days. Symptoms start 1 to 4 days after the virus enters the body. That means that you may be able to pass on the flu to someone else before you know you are sick, as well as while you are sick. Some people can be infected with the flu virus but have no symptoms. During this time, those persons may still spread the virus to others.
https://www.cdc.gov/flu/about/disease/spread.htm
People with flu can spread it to others up to about 6 feet away. Most experts think that flu viruses are spread mainly by droplets made when people with flu cough, sneeze or talk. These droplets can land in the mouths or noses of people who are nearby or possibly be inhaled into the lungs.
https://www.cdc.gov/flu/about/disease/spread.htm
You may also wonder how long it takes to get sick after you have been exposed and how long you are contagious when you have it. Flu Incubation Period. The typical flu incubation period—the time between exposure and the start of symptoms—is between 24 hours and four days, with the average being two days.
https://www.verywell.com/flu-incubation-period-770308
Preventing the Flu After Exposure. 1  Vitamin C: Although Vitamin C is widely used and has many benefits, there is no scientific proof that it will help you avoid an illness such as the flu or a cold. 2  Humidifiers: Evidence suggests that viruses such as the cold and flu spread more easily in cold, dry air.
https://www.verywell.com/flu-incubation-period-770308
If you are exposed to someone with the flu, avoid close contact with the person, and wash your hands frequently. 1  Vitamin C: Although Vitamin C is widely used and has many benefits, there is no scientific proof that it will help you avoid an illness such as the flu or a cold.
https://www.verywell.com/flu-incubation-period-770308
how long is influenza contagious
For most healthy adults, influenza is contagious up to 5 to 7 days after becoming sick. Influenza is contagious in most healthy adults to infect other people beginning 1 day before symptoms develop and up to 5 to 7 days after becoming sick.