Case: A 7-day-old male presented to the emergency department of our hospital with a history of lethargy and poor feeding for 1 day. He had no fever, no vomiting, no diffi culty breathing, and no other complaints. He was born at 37 weeks’ gestation by normal spontaneous vaginal delivery, and his birth weight was 4 kg. The mother was colonized with group B streptococcus infection and received pen...