how long do flu symptoms show up after exposure?
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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. Some people can be infected with the flu virus but have no symptoms.
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How long does the flu last? Certain flu symptoms tend to last longer than others. The fever typically resolves in two to three days but can last as long as a week or more. The sore throat often gets worse even while the rest of the symptoms resolve, and can easily last a week or longer.
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Symptoms begin 6 – 24 hours after exposure: Diarrhea, stomach cramps. Vomiting and fever are uncommon. Usually begins suddenly and lasts for less than 24 hours.
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“Stomach flu symptoms include stomach pain, nausea, vomiting and diarrhea,” Miller says. “A low-grade fever, chills and muscle aches aren't uncommon to experience as well. Symptoms can start as little as 12 hours after exposure.”
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Symptoms of fever, poor appetite, runny nose and sore throat can appear three to five days after exposure. A blister-like rash on the hands, feet and in the mouth usually develops one to two days after the initial symptoms.
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How Long Does the Flu Last? Fever and other flu symptoms often go away after 5 days or so, but kids may still have a cough or feel weak. Children's symptoms are usually all gone in a week or two.
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Avoid touching your mouth, nose, or eyes. That's not easy to do, so keep those hands clean. If you have flu-like symptoms -- fever plus at least cough or sore throat or other flu symptoms -- stay home for seven days after symptoms begin or until you've been symptom-free for 24 hours -- whichever is longer.
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The contagious period for the flu begins about 1 day before symptoms start and can last as long as 5-7 days from when you first felt sick. You're generally contagious with a cold 1-2 days before your symptoms start, and you could be contagious as long as your symptoms are present—in rare cases, up to 2 weeks.
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Symptoms of influenza usually appear 1-4 days after exposure. How long can a person spread influenza? Persons are most contagious during the 24 hours before symptoms appear and may be contagious for up to 5 -7 days after getting sick.
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Adults are most contagious with the flu from 24 hours before symptoms start to three to five days afterward. Children can spread the virus for longer—up to 10 days, and sometimes even beyond that. People who have serious immune system problems can spread influenza for weeks, or even months, after they get it.
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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 soon after exposure to hepatitis B will symptoms appear? If symptoms occur, they begin an average of 90 days (or 3 months) after exposure, but they can appear any time between 8 weeks and 5 months after exposure.
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Symptoms usually appear from one to four days after exposure to the virus, and they last five to seven days. For people who've had a flu shot, the symptoms may last a shorter amount of time, or be less severe.
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Signs and Symptoms. Symptoms may appear anywhere from 2 to 21 days after contact with the virus, with an average of 8 to 10 days.
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Symptoms. Symptoms of a common cold usually appear one to three days after exposure to a cold-causing virus.
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For those who do get sick, signs and symptoms usually appear one to three weeks after exposure and may include: Watery, sometimes foul-smelling diarrhea that may alternate with soft, greasy stools. Fatigue or malaise.
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Here's something else to keep in mind: it can take two weeks for the flu vaccine to take effect. So if you're exposed to the flu within that two week period, you might still get sick. Once a flu season is over, the old vaccine is not as effective, so an annual flu shot is needed for optimal protection.