RSV Is Surging: What We Know about This Common and Surprisingly Dangerous Virus

(Scientific American) As flu season picks up and experts weigh concerns about another possible COVID surge, children’s hospitals are already filling with patients with another viral threat: respiratory syncytial virus, or RSV. Even though many people haven’t heard of RSV, pretty much everyone has had it, probably multiple times, says Anthony Flores, chief of pediatric infectious diseases at the University of Texas Health Science Center at Houston and a physician at Children’s Memorial Hermann Hospital. RSV is the leading cause of bronchiolitis—inflammation of the lung’s small airways—in infants, and the virus is so common that nearly all children have encountered it by their second birthday.