A young child presents with a 2-week history of mild upper respiratory symptoms and a severe paroxysmal cough, followed by high-pitched inspiratory whoop. A complete blood count (CBC) reveals marked lymphocytosis. What is the likely diagnosis and causative organism?
Answer: Whooping cough or pertussis caused by B. pertussis
If the answers is incorrect or not given, you can answer the above question in the comment box. If the answers is incorrect or not given, you can answer the above question in the comment box.