Infections caused by the latest variant have symptoms including fever, chills, fatigue, cough, congestion and headache.

Dr. Jaunita Mora said the respiratory syncytial virus is the leading cause of infant hospitalizations. Here are the people she said are most vulnerable to the disease.

In recent years, however, COVID-19 has not only stolen the public health spotlight but also eclipsed the development of the first RSV vaccine. Vaccine uptake may not be much better during the 2024–25 respiratory virus season.

Almost all children get RSV at least once by the time they turn 2 years old. The common cold is an upper respiratory