Children’s Hospital Colorado has seen an early uptick in RSV hospitalizations and is starting to see the first few flu cases of the season, said Dr. Kevin Messacar, an infectious disease specialist and associate professor at the University of Colorado School of Medicine. “We have been seeing increased patient volumes since the late summer, which started with rhinoviruses and enteroviruses as children returned to school, and now is being driven by RSV and parainfluenza,” he said. “With influenza season rapidly approaching with what appears to be an early start, we are concerned about the persistently increased volumes of sick children requiring hospitalization.”