Question: What three human body areas are affected by the influenza virus?

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What part of the body does the influenza virus affect?

Flu is a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and sometimes the lungs. It can cause mild to severe illness, and at times can lead to death.

Where do most influenza viruses enter the body?

The flu virus typically enters your body through your nose via droplets from an infected person who sneezes or coughs near you. If a sick person is standing within six feet of you, they’re close enough to spread germs.

How do you know if your body is fighting a virus?

In addition to aches and pains, chills are another tell-tale sign that your body may be fighting off a virus. In fact, chills are often one of the first symptoms that people notice when they’re coming down with the flu.

What kills the flu virus in the body?

Fever—Fevers fight influenza viruses.

Because viruses are sensitive to temperature changes and cannot survive above normal body heat, your body uses fever to help destroy them.

How long is the flu contagious?

Period of Contagiousness

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 incubation period for flu?

The incubation period of influenza is 2 days long on average but may range from 1 to 4 days in length.

What helps your body fight a virus?

Healthy ways to strengthen your immune system

  1. Don’t smoke.
  2. Eat a diet high in fruits and vegetables.
  3. Exercise regularly.
  4. Maintain a healthy weight.
  5. If you drink alcohol, drink only in moderation.
  6. Get adequate sleep.
  7. Take steps to avoid infection, such as washing your hands frequently and cooking meats thoroughly.