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Doctor insights on: How Long Is Flu Contagious After Fever Breaks

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Dr. Michael Ein
Board Certified, Infectious Disease
42 years in practice
3M people helped
1

1
How long is the flu contagious after fever has broken and aches are gone?

How long is the flu contagious after fever has broken and aches are gone?

See below: Virus sheding in influenza begins 1 day before the start of symptoms and then continues for about 8 days after the start of symptoms. This would be the time that patients are contageous. ...Read more

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Dr. Bret Boyle
Board Certified
22 years in practice
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Dr. Heidi Fowler
1,748 doctors shared insights

Flu (Definition)

Flu is also known as Influenza. Influenza (aka "flu") is a contagious respiratory viral illness that can cause mild to severe illness including death. There is treatment available to decrease symptoms, but it is better to prevent the flu is by getting ...Read more


Dr. Martin Raff
Board Certified, Infectious Disease
50 years in practice
103M people helped
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Cold flu how many days after fever breaks are you contagious?

Cold flu how many days after fever breaks are you contagious?

Influenza: This is highly dependent on the particular virus with which you were infected. Many people call their infection "flu" when it was not truly influenza. Be more specific and rephrase the question. ...Read more

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Dr. Bret Boyle
Board Certified
22 years in practice
264K people helped
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Dr. Ahmad M Hadied
Board Certified, Orthopedic Surgery
43 years in practice
53M people helped
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How long after I have had the flu after my fever has broken am i contagious?

How long after I have had the flu after my fever has broken am i contagious?

Let me help: The period when an infected person is contagious depends on the age and health of the person. Studies show that most healthy adults may be able to infect others from 1 day prior to becoming sick and for 5 days after they first develop symptoms. Some young children with weakened immune systems may be contagious for longer than a week. ...Read more

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Dr. Oscar Novick
Board Certified, Pediatrics
52 years in practice
54M people helped
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Dr. Bret Boyle
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Dr. Susan Rhoads
Board Certified, Family Medicine
32 years in practice
4M people helped
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Flu for 5 days despite of flu shot. Still have fever, aches, chills, no appetite, mild cough, headache, exhaustion. Still contagious? How long?

Flu for 5 days despite of flu shot. Still have fever, aches, chills, no appetite, mild cough, headache, exhaustion. Still contagious? How long?

See your doctor.: One of the biggest problems from the flu is the chance of secondary bacterial infections, including sinusitis and pneumonia. Fever for 3-4 days can be normal, but with 5 days of it, it is time to be seen. You are contagious for 5-7 days after the onset of symptoms. If you have shortness of breath, dizziness, blurry vision, go to the ER. The vaccine only protects 60% of folks. ...Read more

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Dr. Anatoly Belilovsky
Board Certified, Pediatrics
29 years in practice
6M people helped
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My 2 yr old got the flu mist. 48 hrs later he has a runny nose and low grade fever. Could this be from the mist? Is he contagious? How long last?

My 2 yr old got the flu mist. 48 hrs later he has a runny nose and low grade fever. Could this be from the mist? Is he contagious? How long last?

Possibly, both;: If he is contagious, it is with the weakened flu virus, and the most he can do to someone else is give them a free FluMist by sneezing on them. ...Read more

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Dr. Oscar Novick
Board Certified, Pediatrics
52 years in practice
54M people helped
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7
I have been diagnosed with h1n1 flu. How long am i contagious? High fever is gone. Now have low grade fever with cough/phlegm, fatigue, sinusitis.

I have been diagnosed with h1n1 flu.  How long am i contagious? High fever is gone. Now have low grade fever with cough/phlegm, fatigue, sinusitis.

Flu: You usually are contagious 7-10 days with the flu. However, you have developed a secondary infection so i would advise you to see you doctor. ...Read more

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Dr. Scott Diede
Board Certified, Pediatric Hematology and Oncology
23 years in practice
3M people helped
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8
Got conflicting advice for flu a. Am i not contagious after 5 days or after being fever free for 24 hrs?

Got conflicting advice for flu a. Am i not contagious after 5 days or after being fever free for 24 hrs?

CDC web site...: I got the five day recommendation from the center for disease control website (one of the best authorities on infectious diseases). See: http://www.Cdc.Gov/flu/about/disease/spread.Htm hope you are feeling better. ...Read more

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Dr. Susan Rhoads
Board Certified, Family Medicine
32 years in practice
4M people helped
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Are you still contagious with the flu if your fever has gone down?

Are you still contagious with the flu if your fever has gone down?

Yes: If you have the flu, you've been contagious since the day before you showed symptoms and for 5-10 days after you started showing signs of it. Children may be contagious even longer. See http://www.cdc.gov/flu/professionals/acip/clinical.htm ...Read more

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Dr. Chad Rudnick
Board Certified, Pediatrics
4 years in practice
578K people helped
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Friends kid dx with flu 6 days ago is he still contagious if he has no fever? What are the chances i will get it if im around him tomorrow?

Friends kid dx with flu 6 days ago is he still contagious if he has no fever? What are the chances i will get it if im around him tomorrow?

Flu: From the CDC: 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. more info from the CDC: http://www.cdc.gov/flu/about/disease/spread.htm ...Read more

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Dr. Mark Diamond
2,229 doctors shared insights

Fever (Definition)

Fever is the temporary increase in the body's temperature in response to some disease or illness. A child has a fever when the temperature is at or above one of ...Read more


Contagious (Definition)

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


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Dr. Bret Boyle
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