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Respiratory syncytial virus (RSV) Health Article

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Definition

Respiratory syncytial virus (RSV) is a very common virus that leads to mild, cold-like symptoms in adults and older healthy children. It can be more serious in young babies, especially to those in certain high-risk groups.

Alternative Names

RSV

Causes, incidence, and risk factors

RSV is the most common germ that causes lung and airway infections in infants and young children. Most infants have had this infection by age 2. Outbreaks of RSV infections typically begin in the fall and run into the spring.

RSV is spread easily by physical contact. Touching, kissing, and shaking hands with an infected person can spread RSV. The disease spreads from person to person through contact with contaminated tiny droplets or objects that the droplets have touched.

RSV can live for a half an hour or more on hands. The virus can also live for up to 5 hours on countertops and for several hours on used tissues. RSV often spreads very rapidly in crowded households and day care centers.

The infection can occur in people of all ages.

Risks include:

  • Attending daycare
  • Being exposed to tobacco smoke
  • Having school-aged siblings
  • Living in crowded conditions

Symptoms

Note: Symptoms vary and differ with age. Infants under age 1 are most severely affected and often have the most trouble breathing. Older children usually have only mild, cold-like symptoms. Symptoms usually appear 4 - 6 days after coming in contact with the virus.

Signs and tests

Rapid tests for this virus can be done on a fluid sample taken from the nose at many hospitals and clinics.

Treatment

Antibiotics do not treat RSV. Mild infections go away without treatment. Infants and children with a severe RSV infection may be admitted to the hospital so they can receive oxygen, humidified air, and fluids by IV.

A breathing machine (ventilator) may be needed.

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Reviewer Info: Neil K. Kaneshiro, MD, MHA, Clinical Assistant Professor of Pediatrics, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc. ; ADAM Health Illustrated Encyclopedia, 03/14/2009
 
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