RSV stands for respiratory syncytial virus, and it's the top cause of bronchiolitis (inflammation of the small airways) and pneumonia in U.S. infants. The infection begins with flu-like symptoms, including a fever, runny nose, and cough.earing, redness, itching, and crusty eyelashes are all signs of conjunctivitis, commonly called pinkeye. Often caused by the same viruses as the common cold, pinkeye spreads rapidly in schools and day care centers. Consult your pediatrician to determine whether your child needs treatment.