A 3-day-old male neonate was admitted with respiratory distress requiring oxygen. Poor feeding, mild dehydration and pustular erythematous rash on his face were noted. The parents were anxious as an older sibling died on day 9 of life with a similar illness. Initial investigation of serum electrolytes, blood gas and sepsis screen were normal. His symptoms improved within 48 hours. On day 8 of life he again deteriorated with dehydration, reappearance of erythematous rash …