Final answer:
The infant may have bronchiolitis caused by RSV or hMPV. Treatment is supportive and some high-risk infants may need the RSV vaccine.
Step-by-step explanation:
The symptoms described suggest that the infant may have bronchiolitis, which is an inflammation of the small airways in the lungs. Common causative agents of bronchiolitis are respiratory syncytial virus (RSV) and human metapneumovirus (hMPV). Chest X-ray findings in bronchiolitis may include hyperinflation, peribronchial cuffing, and patchy atelectasis. Treatment for bronchiolitis is primarily supportive, focusing on maintaining hydration and monitoring respiratory status. Infants and young children who are at high risk for severe illness from respiratory infections, such as those born prematurely or with certain heart or lung conditions, may need the RSV vaccine.