Respiratory Syncytial Virus, or RSV, is a viral pathogen that causes severe lung infections, including bronchiolitis (infection of small airways in the lungs) and pneumonia (infection of the lungs). It accounts for about 33 million cases of acute lower respiratory tract infection (LRTI) worldwide in children under the age of 5 years each year and is a leading cause of hospitalization in infants.
There are a few RSV vaccines available, including AstraZeneca/Sanofi's Beyfortus, Pfizer's Abrysvo, and GSK's Arexvy, designed to prevent RSV disease in infants and older adults at higher risk of hospitalization or death. Additionally, antivirals like Virazole are used to treat severe lower respiratory tract infections in hospitalized infants and young children.
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