if someone has the flu how long does it take for someone else to get it?
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When Flu Spreads 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. Children and some people with weakened immune systems may pass the virus for longer than 7 days.
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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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The flu shot is made from an inactivated virus that can't transmit infection. So people who get sick after receiving a flu vaccination were going to get sick anyway. It takes a week or two to get protection from the vaccine.
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According to the Centers for Disease Control and Prevention (CDC) , an uncomplicated influenza infection will last from three to seven days in most people, including children. However, a cough and feelings of weakness or fatigue can last for two weeks or longer.
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Uncomplicated influenza signs and symptoms typically resolve after 3-7 days for the majority of people, although cough and malaise can persist for >2 weeks, especially in elderly people and those with chronic lung disease.
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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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Symptoms can begin about 1 to 4 days, or an average of 2 days, after a person is first exposed to the influenza virus. Fever and other symptoms can usually last up to 7 to 10 days, but the cough and weakness may last 1 to 2 weeks longer.
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What Are the Symptoms of the Flu? You may feel very weak and tired for up to 2 or 3 weeks. You'll have muscle aches and periods of chills and sweats as fever comes and goes. You may also have a stuffy or runny nose, headache, and sore throat.
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Sore throat: A sore throat brought on by flu may be severe and typically lasts 3 to 5 days. Weakness and fatigue: Weakness and fatigue can be so severe that they interfere with normal activities, such as attending work and school.
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How soon do symptoms appear? 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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Most children recover from the flu within a week. But they may still feel very tired for as long as 3 to 4 weeks. A cold is usually mild and often goes away after a few days.
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It's to protect you from the severity of the infection. If you get the flu without a shot, you'll have symptoms for 5 to 14 days. If you get the flu shot and still contract the flu, the flu shot will shorten the duration of that infection so you're only ill a fraction of the time.
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While many sick with the flu tend to recover within two weeks, some people can develop complications. One of those complications can lead to pneumonia. According to Everyday Health, one-third of pneumonia cases develop from a respiratory virus, with the flu the most common of those.
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Protection Doesn't Happen Immediately How long until the flu vaccine is effective can vary from person to person, but generally it takes two weeks after vaccination for the body to develop antibodies that provide protection against flu viruses. This is why it's important to not delay immunization.
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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. Younger children or people with a weakened immune system may be contagious for longer.
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Flu is usually most infectious from the day your symptoms start and for a further 3 to 7 days. Children and people with lowered immune systems may be infectious for a few days longer.
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If you catch the flu, you're contagious for one to two days before you start to show symptoms and for five to seven days after becoming sick.