Respiratory Syncytial Virus (RSV)

1 min read
Respiratory Syncytial Virus (RSV) Blog Image


The US Food and Drug Administration (FDA) recently approved the first vaccine that protects newborns from Respiratory Syncytial Virus (RSV).

About Respiratory Syncytial Virus (RSV)


  • It is a common respiratory virus.
  • RSV is one of the most frequent causes of childhood illness. 
  • It usually causes mild, cold-like symptoms.
  • Premature infants, babies younger than 6 months old, people above age 65 and people who have a compromised immune system, chronic lung disease or congenital heart condition can get a more severe case of RSV.
  • A severe infection leads to pneumonia and bronchiolitis.
  • Transmission: RSV spreads from person to person through
    • The air by coughing and sneezing;
    • Direct contact, such as kissing the face of a child who has RSV;
    • Touching an object or surface with the virus on it, then touching your mouth, nose, or eyes before washing your hands;
  • People who have an RSV infection are usually contagious for 3 to 8 days. But sometimes infants and people with weakened immune systems can continue to spread the virus for as long as 4 weeks.
  • Symptoms: The symptoms of RSV infection usually start about 4 to 6 days after infection. They include
    • Runny nose
    • Decrease in appetite
    • Cough
    • Sneezing
    • Fever
    • Wheezing
    • RSV can also cause more severe infections, especially in people at high risk. These infections include bronchiolitis, an inflammation of the small airways in the lung, and pneumonia, an infection of the lungs.


Q1) What is a virus?

A virus is a microscopic infectious agent that is incapable of independent life and can only replicate within the living cells of a host organism. Viruses are a unique category of biological entities that straddle the line between living and non-living things. They are composed of genetic material (either DNA or RNA) encased in a protein coat called a capsid. Some viruses also have an outer lipid envelope derived from the host cell membrane.

Source: USFDA gives nod to first vaccine to protect newborns from Respiratory Syncytial Virus