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The US CDC has indicated that after 24 straight hours without a fever measured with a thermometer (while not taking any fever reducers) people can return to work and school and are considered no longer contagious. See the related question below about the incubation period and stages of a flu infection.
What else can I help you with?
When are you no longer contagious when you have the flu?
When you have been fever free for 24 hours.
If someone is sick with the flu but no has a fever are they still contagious?
YES!
How long is the 24 hour stomach flu contagious?
How long is the 24 stomach flu contagious for
Are you contagious if you are not running a fever?
At the beginning of a viral infection, like the cold and flu, you can be contagious while showing no symptoms at all for a day or even two. However, the rule of thumb is that after having a fever with the flu and then it subsides, once you have gone a full 24 hours after that without a fever (when taking no fever-reducing medicines), you are considered no longer contagious and can go back into public again.
How long is a person with swin flu contagious?
it takes 3 or 4 days to not be contagious
Will you still be a carrier of H1N1 even if you already recovered from it?
No, once you have had the flu and your body has successfully fought it off, the virus is gone from your body. Once you are fever-free for 24 hours straight after you had the flu, you can consider yourself no longer contagious.
Is it safe to kiss a guy after he's had a flu?
it should be as long as it's been at least a week from the time his fever has broken. by this time he shouldn't be contagious any more.
How long are you contagious after stomach flu?
You may be contagious a few days after you have had the stomach flu. Normally the stomach flu runs its course in one to two days.
If someone is sick with a cold or flu but no fever are they still contagious?
Still Contagious Yes, fever is a sign of being contagious. The medication is most likely an antibiotic and it takes a few days before it actually starts working.Actually if it is a cold or flu it is viral and antibiotics should NEVER be given for these as they have no effect on viruses, can cause increased antibiotic resistance in bacteria, and are a complete waste of money.
Is the Swine Flu only contagious when you have a fever?
It appears to be generally accepted that a person infected with swine flu may be contagious for one day prior to the appearance of any symptoms; you will be infectious before you know that you are ill.See the related question below for additional information.
Are you contagious after the fever is gone?
* My doctor informed me that a person is contagious only when they have a fever. * My doctor told me the same as the first answer but said that you need to be fever-free for at least 24 hours (48 hours is better) without the aid of ibuprofen before you can be sure of no longer being contagious. *This is not always accurate. Consider the common cold. People can show symptoms and never have a fever, yet cold viruses still spread. It may be a good rule of thumb that if you have a fever you are at the most contagious point in your infection, but you may be contagious before or after a fever has occurred. If your fever has subsided then you may be safe to be in public, but continue to take precautions not to infect others by limiting touch to surfaces, wearing a face mask or covering your mouth, etc.
Can a fever from a flu shot be contagious?
If you had a flu vaccination and soon or immediately after getting it you had a mild fever and other mild flu symptoms caused by the vaccination, then the fever you have would not be due to contagious disease but, rather, due to the immune response that the vaccination caused in your body (which is how the shots give us immunity) and it would not be from infectious disease or the flu. These mild reactions to the flu shot usually only cause a low grade fever under 100F and last only a few days. However, there is also always the possibility that you actually have the flu, since it takes about two weeks to develop full immunity from an inoculation and if you caught the flu before the vaccination, it could be what is causing a fever. Use careful hand washing technique to protect others in case it is actually the flu and until you have gone 24 hours without a fever.
