A lung disease that is an inflammation of the bronchioles, the smallest air passages of the lungs. It is caused by viruses and bacteria. The disease has_symptom cough, has_symptom wheezing, has_symptom shortness of breath, has_symptom fever, has_symptom nasal flaring in infants and has_symptom bluish skin due to lack of oxygen. [ http://purl.obolibrary.org/obo/ECO_0007638 ]