RSV

abbreviation for

1. respiratory syncytial virus: (in pathology) a common virus that causes mild coldlike symptoms such as runny nose, coughing, wheezing, and fever in most adults, but that can cause more serious illness in infants, young children, elderly adults, and those with chronic medical conditions.
2. Bible. Revised Standard Version.

RSV

abbreviation for

1. Revised Standard Version (of the Bible)
2. respiratory syncytial virus