According to local news reports, a Denver-area hospital is in the midst of a wave of respiratory syncytial virus (RSV) cases.

The Rocky Mountain Hospital for Children in Denver is currently “packed with children” suffering from the virus. A CBS4 Denver news report says nearly half of the rooms in intensive care unit have babies fighting RSV, and the hospital has seen an uptick in cases compared to the same time period in 2014. “Last year through February the hospital had 82 cases. This year as of Feb. 18 there have already been 136,” the article reported.

The hospital’s physicians are attempting to get the word out that the disease is spreading and could be dangerous, even deadly, for some infants.

The RSV outbreak comes after the same hospital has fought outbreaks of enterovirus D68 and influenza, the report said.