how long are you contagious with lower respiratory infection?
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For colds, most individuals become contagious about a day before cold symptoms develop and remain contagious for about five to seven days. Some children may pass the flu viruses for longer than seven days (occasionally for two weeks). Colds are considered upper respiratory infections.
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For most flu viruses, that window is about a week, starting from a day before your symptoms appear, to six or seven days afterward. For colds, even people who are feeling better can spread the virus to others for up to three weeks.
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How long am I contagious with walking pneumonia? If you have walking pneumonia caused by Mycoplasma pneumoniae, you can be considered contagious from two to up to four weeks before symptoms appear (called the incubation period). During this time, you will not realize you are contagious and spreading pneumonia.
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How long are people infectious? People infected with a norovirus are contagious from the moment they begin feeling ill to at least three days after recovery. Some people may be contagious for as long as two weeks after recovery.
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It may take one to four days after exposure to the influenza virus for symptoms to develop. If you have the flu, you'll be contagious one day before developing symptoms and up to five to seven days after becoming ill.
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If you've been exposed to the bacteria, you can be contagious a few days before symptoms start. If you're treated with antibiotics, you'll remain contagious until you've been on antibiotics for at least 24 hours. If you don't seek treatment, you'll remain contagious for 2 to 3 weeks after contracting the infection.
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People with flu are most contagious in the first 3-4 days after their illness begins. Some otherwise 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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What is the contagious period for an enterovirus infection? In general, individuals are contagious about three days after exposure to the virus and remain contagious until about 10 days after they develop symptoms.
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Pittman notes individuals with the flu can be contagious for up to three weeks after the onset of symptoms. “In many cases, just because you or your children are fever free and can return to work or school does not mean you are no longer contagious.
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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.
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Is It Contagious? Walking pneumonia spreads through sneezes or coughs. But it spreads slowly. If you get it, you could be contagious (which means you could spread it to other people) for up to 10 days.
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You're typically contagious one to two days before symptoms develop and may remain contagious until your symptoms go away. If you or your child is diagnosed with bacterial tonsillitis, you're usually not contagious when your fever is gone and you have been on antibiotics for 24 hours.
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Typically, you're contagious from 1 day before you have any symptoms. You stay that way for 5 to 7 days after you start feeling sick. The virus can be spread until symptoms disappear.
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People with URI should reduce contact with others to avoid the spread of infection. Adults may be infectious from the day before symptoms begin through approximately 5 days after the onset of illness.
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“Most people are contagious with a cold a day before they notice symptoms until about a week after the onset of symptoms,” Pittman said. “The CDC's recommendation is to stay home until you are fever free for 24 hours without the help of a fever reducer.”
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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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You are most contagious while you still have blisters and mouth ulcers – which is usually for up to seven to 10 days. But you can continue to pass the virus in your faeces for several weeks, so you may still be mildly infectious during this time.