The signs and symptoms of RSV depend on the age of the patient. In newborns, RSV can cause fussiness, poor feeding and decreased activity, along with cold symptoms and difficulty breathing. In older infants, symptoms typically begin with runny nose and cough, and can progress to bronchiolitis or pneumonia with wheezing and labored breathing. In children and adults, RSV symptoms are typically consistent with a cold with fever, cough, sore throat and runny nose. In older children and adults with impaired immune systems, RSV can cause severe pneumonia.
