Case homepage 7 week old with fever and cough
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A 7-week-old female is brought in to the ER with fever, cough, and increasing respiratory distress over 3 days. The baby was born at term with a birth weight of 7 lbs 6 oz. On exam, she had a HR=155, RR 70, O2 sats 90%.

Given the above history, what are the possible differential diagnoses?

Responses: choose any, all or none