Respiratory Syncytial Virus (RSV), is a common cause of mild cold-like symptoms such as runny nose, cough and fever. Nearly all children in the United States normally catch an RSV infection by age 2.
RSV is not a new thing, but cases have been causing hospitals to be at near capacity in some areas.
According to Dr. Deanna Behrens, a pediatric critical care physician at Advocate Children's Hospital in suburban Chicago, "There is no one virus that's causing pediatric respiratory viruses this fall. Unfortunately, it's all of them."
According to an article on NBCNews.com, "Babies and preschool-aged children are coming down with the flu, respiratory syncytial virus (RSV), parainfluenza viruses, adenoviruses, rhinoviruses and enteroviruses in ways never before imagined, Behrens and other infectious diseases experts said."