respiratory syncytial virus
Pronunciation: sin-SISH-al
Also written as: RSV — Respiratory Syncytial Virus
Major cause of lower respiratory tract infections in infants and young children, particularly severe in premature infants.
Full Definition
Respiratory syncytial virus (RSV) is the most common cause of bronchiolitis and pneumonia in children under 2 years of age. The virus causes annual epidemics typically beginning in fall and peaking in winter months. While most children experience mild cold-like symptoms, RSV can cause severe disease in premature infants, those with chronic lung disease, congenital heart disease, or immunodeficiency. Infection ranges from mild upper respiratory symptoms to severe lower respiratory tract disease requiring mechanical ventilation.
Usage
Usage note: RSV widely accepted abbreviation; spell out on first use in formal documents.
In Context
- "Respiratory syncytial virus testing was positive, explaining the infant's severe bronchiolitis." — Laboratory result
- "RSV prophylaxis with palivizumab is recommended for high-risk premature infants during RSV season." — Prevention guideline