What is Respiratory syncytial virus (RSV)?Dr. Dina Kulik MD, FRCPC, PEM2022-11-29T22:37:37-05:00
Respiratory Syncytial Virus or RSV is a common viral infection of the lungs and respiratory tract. It is ubiquitous; almost all children have been infected with RSV by age 2. RSV usually causes mild, cold-like symptoms lasting a week or two. While most cases are mild, RSV can be severe, particularly in very young babies and older adults.