A mother brings her 3 month old to the emergency room compla…

A mother brings her 3 month old to the emergency room complaining of breathing too fast and not eating. This is the patient’s first illness requiring a hospital visit. The assessment is as follows: average size 3 month old with upper airway congestion, HR = 168bpm, RR = 78 breaths/min, BP = 110/80, Temperature = 99.7 F, SpO2 on room air = 89%, Breath Sounds = diminished with fine crackles. What condition does the RCP suspect this patient to have?