Respiratory Syncytial Virus (RSV) is a common virus that affects the respiratory system, especially in young children, older adults, and individuals with weakened immune systems. While RSV often causes mild, cold-like symptoms, it can lead to more serious complications, including pneumonia. In fact, RSV is one of the leading causes of pneumonia in infants and young children. Keep reading to learn more about the connection between these conditions and who is most at risk. For ...