This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteria, Subject name: Microbiology
[{'content': 'Most common form of melioidosis - \nSelect and explain. \nA. Septicemia, B. Pulmonary infection, C. Arthritis, D. Liver abscess', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. is \'b\' i.e., Pulmonary infection Burkholderia pseudomallei* It is also known as Whitmore\'s bacillus.* It is aerobic gram negative bacillus.* It is motile which differentiate it from nonmotile B. mallei.* It shows typical bipolar \'safety pin\' appearance with methylene blue stain.* It is free living saprophyte normally found in soil, ponds and rice paddies and on products from endemic areas.* It produces two heat labile toxins, one lethal and other necrotising.* It causes Meliodosis. Most common manifestation of melioidosis is acute pulmonary manifestation. Other manifestations are acute septicemia, localized skin infection, suppurative parotitis and chronic infections.* Virtually every organ can be affected and hence meliodosis has been called the "great imitator" of other infectious disease.* Isolation of organism on selective medium is diagnostic.* Ceftazidime is the drug of choice. Carbapenems (imipenem, meropenem) are also first line drugs.Meliodosis is also known as Vietnam Time-Bomb disease.', 'role': 'assistant'}]