Croup

Croup symptoms improved when children were exposed to 30 minutes of outdoor cold air in addition to receiving a steroid, according to the results of a randomized controlled trial published in Pediatrics.

Supplementation with fish oil and high-dose vitamin D during pregnancy reduced the risk for croup in early childhood, researchers reported at the European Respiratory Society International Congress.

The proportion of children with COVID-19-related croup increased during the period in which omicron was the predominant variant in the United States, according to a research letter published in JAMA Network Open.

Researchers said they found “compelling evidence” that the omicron variant of SARS-CoV-2 may cause croup in children.