Croup is a condition that affects the lungs, voice box, and windpipe in young children. It most often occurs due to a group of viruses called human parainfluenza viruses (HPIVs). No vaccine can ...
Some children infected with the Omicron variant are experiencing croup-like symptoms, NBC News reported. Croup is an infection in the upper airway that causes a harsh cough that sounds like barking.
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