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Doctor insights on: How Long Does Fever Associated With The Flu Last

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Dr. Heidi Fowler
1,882 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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My fever has come and gone for almost 12 hours. How long does fever last with the flu. I can only take Tylenol! 4k mgs in 24 hrs, right?

My fever has come and gone for almost 12 hours. How long does fever last with the flu. I can only take Tylenol! 4k mgs in 24 hrs, right?

Flu...: with the flu, the fever can last for a few days. The maximum dose of Tylenol (acetaminophen) is 3 grams (or 3000mg) in 24 hours. Be careful not to exceed this dose as it can lead to liver damage. If your symptoms worsen, see your doctor. ...Read more

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Got the flu and on tamiflu (oseltamivir). Fever 2 degrees above norm. How long will fever typically last? I did have my flu shot. Tx

Got the flu and on tamiflu (oseltamivir). Fever 2 degrees  above  norm. How long will fever typically last?  I did have my flu shot.  Tx

Shortens duration: A flu shot may not have been the one for the strain of virus you have. Taking tamiflu (oseltamivir) before can ward of the flu, and if taken right away usually it shortens the duration of symptoms. Feel better! ...Read more

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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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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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My child has a fever of 102.7 should I take her to the er? She has the flu last month and they it was string a. Could this be related?

My child has a fever of 102.7 should I take her to the er? She has the flu last month and they it was string a.  Could this be related?

See your doctor: With these kinds of symptoms and their persistent nature, it's best if you see your doctor. He/she will listen to you, do an examination, possibly run some tests and let you know what's going on. ...Read more

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My husband has had a fever for the last couple of days (100.2 - 100.5) , he has had body aches and does not feel hungry...would this be the flu ?

My husband has had a fever for the last couple of days (100.2 - 100.5) , he has had body aches and does not feel hungry...would this be the flu ?

? flu: It is certainly a possiblity given his symptoms. I have data from the US that shows flu activity but at low levels for this timeframe. Unfortunately a lot of other viruses are circulating as well. He could be tested but the treatment at this point would be symptom relief only. Good luck ...Read more

Dr. Mark Diamond
2,227 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