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Doctor insights on: How Long Is A Person Contagious With The Flu

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Dr. Heidi Fowler
1,889 doctors shared insights

Flu (Definition)

The flu, otherwise known as influenza, is a viral infection of the nose and throat. Symptoms of influenza include fever, chills, runny nose, muscle aches, fatigue, malaise, headaches, and coughing. Children with the flu often have nausea and vomiting as well. Some strains of the flu are preventable by getting a yearly flu ...Read more


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I would like to know how long someone sick with the flu can spread it to others. When is that person no longer contagious?

I would like to know how long someone sick with the flu can spread it to others. When is that person no longer contagious?

Flu: According to the cdc: “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. Children may pass the virus for longer than 7 days.”. ...Read more

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Docs, usually how long is someone contagious with the flu?

Flu: According to the cdc: “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. Children may pass the virus for longer than 7 days.”. ...Read more

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How long is someone contagious with the flu? Mother would like to visit this weekend & she has health problems - i can't risk sharing.

How long is someone contagious with the flu? Mother would like to visit this weekend & she has health problems - i can't risk sharing.

Let me explain: The U.S. Library of medicine, defines communicability as the time it takes an infectious agent to be transmitted from an infected person to another person. Once infected with influenza type illnesses, the affected person may begin shedding the virus to others one day before signs and symptoms occur and continue to be contagious 5 to 7 days after symptoms begin. ...Read more

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For how long is the flu contagious on surfaces?

For how long is the flu contagious on surfaces?

About 24 hours: The virus last about 4 hours on solid surfaces and at best about 24 hours. See this site for more info. http://www.cdc.gov/flu/about/qa/disease.htm. ...Read more

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I'm curious as to how long is the flu contagious for?

Influenza: According to the cdc: “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. Children may pass the virus for longer than 7 days.”. ...Read more

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Boyfriend has the flu - how long will he be contagious to me?

Boyfriend has the flu - how long will he be contagious to me?

Until without symtom: If he is coughing, sneezing, if you are kissing him or exchanging other body fluids he may be contagious. Would strongly recommend getting influenza vaccine, whether or not it is likely to help with this immediate exposure. The other issue is how you know he has influenza. These symptoms can be caused by a variety of viruses. If you begin symptoms, get tested, start tamiflu, (oseltamivir) other antiviral. ...Read more

Contagious (Definition)

One is able to transmit an infection to another by ...Read more