how long are you contagious after having influenza b?
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When Flu Spreads People with flu are most contagious in the first three to four days after their illness begins. 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.
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How long are people contagious? People infected with norovirus are contagious from the moment they begin feeling ill to at least 3 days after recovery. Some people may be contagious for as long as 2 weeks after recovery.
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Typical time it takes for symptoms to show up once you've caught the virus is one to four days. Adults can be contagious from the day before symptoms begin through five to 10 days after the illness starts. From: What Are Your Odds of Getting the Flu?
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When you get infected, you typically start to show symptoms about 2 to 5 days after you were exposed to the bacteria. You can stay contagious for up to a month if you don't get treated. Antibiotics can prevent the infection from spreading. People who take antibiotics stop being contagious after about 24 hours.
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Typical time it takes for symptoms to show up once you've caught the virus is one to four days. Adults can be contagious from the day before symptoms begin through five to 10 days after the illness starts.
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Once a person is infected and sick, they can be contagious and spread the virus for about 7 to 10 days. The virus can be spread through close personal contact such as kissing, or sharing drinking cups, forks, or spoons. It can also spread through droplets in the air when an infected person coughs or sneezes.
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When Flu Spreads Symptoms can begin about 2 days (but can range from 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.
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Many people believe cold sores are no longer contagious once they've scabbed over, but this isn't true. You are most contagious for two weeks after the cold sore initially appears, but because the virus lives in the body forever, it is always transmittable to others.
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You are most contagious for two weeks after the cold sore initially appears, but because the virus lives in the body forever, it is always transmittable to others.
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The average incubation period for the flu is two days . This means that, on average, people start to develop flu symptoms about two days after coming into contact with the influenza virus. Several things can influence how long the incubation period is for the flu, including: Infectious dose.
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How long does it take for flu symptoms to show up? Typical time it takes for symptoms to show up once you've caught the virus is one to four days. Adults can be contagious from the day before symptoms begin through five to 10 days after the illness starts.
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With treatment, most people recover in about four to five days and can return to nursery, school or work 24 hours after starting antibiotic treatment. Without treatment, you'll be contagious for one to two weeks after symptoms appear.
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After a person recovers, it is unclear how long they remain contagious. Genetic material of the virus may be detectable up to two weeks after infection, but that "does not necessarily mean that infectious virus is present," according to the CDC.
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If you have norovirus, you're contagious from the moment your symptoms start until at least 3 days after recovery. Some people might be contagious for as long as 2 weeks after they recover.
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With the viral type, children are contagious for as long as they have symptoms. But as with colds, they're most contagious during the peak of the illness, between days three and five. With bacterial pneumonia, contagiousness lasts from the first respiratory symptom until 48 hours after starting antibiotics.
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You are most contagious in the 3 to 4 days after you start to feel sick, but you remain contagious as long as you have symptoms. Usually this is about a week, but it could be a few days more for children or people with weak immune systems. You can also pass it on a day or so before you start feeling sick.
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You can be contagious from a few days up to two weeks or more, depending on which virus is causing your stomach flu (gastroenteritis). A number of viruses can cause gastroenteritis, including noroviruses and rotaviruses.