SANTA ANA, Calif.—Citing a record number of pediatric hospitalizations and emergency room visits, Orange County was under a health emergency declaration Nov. 1, with the county health officer pointing to a sharp rise in cases of the respiratory infection RSV, combined with COVID-19 and flu.
Cases of RSV, or respiratory syncytial virus, have been on the rise nationally, exacerbating a health system still coping with the COVID pandemic and an earlier-than-usual onset of flu season.