Flu in Children

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• Flu in Children Overview
• Flu in Children Causes
• Flu in Children Symptoms
• When to Seek Medical Care
• Exams and Tests
• Flu in Children Treatment
• Self-Care at Home
• Medical Treatment
• Medications
• Next Steps
• Prevention
• Outlook
• For More Information
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• Synonyms and Keywords
• Authors and Editors

Flu in Children Overview

Influenza is an acute infection caused by any of three types of viruses (A, B, or C). Type A strains are associated with the most severe disease. Many people confuse influenza or flu with the common cold. In 2009, a new type A strain emerged called H1N1. Because there is little immunity in the human population, to the H1N1 strain, it has the ability to spread easily from person to person worldwide and sicken even more people than a usual seasonal strain. When this happens, it is called a pandemic.

• Flu is an acute infection of the airway tract in the nose and throat that can sometimes spread down into the lungs. Flu in adults is a frequent cause of acute respiratory illness. Flu, however, affects people of all ages. Children are among the groups most at risk for developing flu and its complications and are more likely to spread the infection to others.



• Flu season begins every year mainly in late fall and early winter and usually spreads widely. The peak season for the flu in the northern hemisphere is from November through March.

Flu in Children Causes

The flu is caused by one of three types of influenza viruses. Types A and B are responsible for the yearly flu epidemics, and type C causes sporadic illness. Type A is further divided into different subtypes based on the chemical structure of the virus.

Influenza is highly contagious. The virus is spread when someone either inhales infected droplets in the air (coughed up or sneezed by an infected person) or when someone comes in direct contact with an infected person's secretions (for example, kissing, sharing of handkerchiefs and other items, and through use of objects such as spoons and forks).

Flu in Children Symptoms

Symptoms may begin two to three days after exposure to the virus. The flu comes on quickly and attacks the upper respiratory system.

• Classic symptoms include high-grade fever up to 104 F (40 C), chills, muscle aches, headaches, sore throat, dry cough, and just plain feeling sick. These symptoms usually last for three to four days, but cough and tiredness may linger for one to two weeks after the fever has gone away. Other family members or close contacts often have a similar illness.



• In younger children, the pattern of influenza may be a typical influenza-like illness or look like other respiratory tract infections such as croup, bronchitis, or pneumonia. Abdominal pain, vomiting, and diarrhea are frequently observed in children. Vomiting tends to be more significant than diarrhea. Fever is usually high and irritability may be prominent.



• In infants, the flu often goes unrecognized because the signs and symptoms are not specific and may suggest a bacterial infection. Influenza in infants younger than 6 months of age is less common, but symptoms include lethargy, poor feeding, and poor circulation.