This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
[{'content': 'Which one of the following statement is true regarding pathogenicity of Mycobacteria species - \nSelect and explain. \nA. M. tuberculosis is more pathogenic than M.bovis to the humans, B. M. Kansasii can cause a disease indistinguishable from tuberculosis, C. M.Africanum infection is acquired from the environmental source, D. M.Marinum is responsible for tubercular lymphadenopathy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: “Mycobacterium kansasii produce human disease indistinguishable from tuberculosis”\nM. kansasii i is the most pathogenic non tuberculous mycobacterial species affecting the lung, and the clinical features\xa0of M. kansasii disease resemble those of tuberculosis. Harrison 17/e p1030\nNTM causing human infection- Refer chapter review.\n\nAbout Other Options:\n\nOption a: M.tuberculosis is equally pathogenic than M.bovis to the humans and Guinea pig. However, M.bovis but not\xa0M.tuberculosis is pathogenic to rabbit.\nOption c: M. africanum belongs to the members of Mycobacterium tuberculosis complex. It is commonly found in West\xa0African countries, causing up to a quarter of cases of tuberculosis in countries such as the Gambia. ‘It is an infection of humans\xa0only and is spread by an airborne route from individuals with open cases of disease.’\xa0\nOption d: ‘M. marinum causes swimming pool granuloma/fish trank granuloma/ fish fancier’s finger. Secondary lesions appear along\xa0with dermal lymphatics.’ (Sporotrichoid spread)', 'role': 'assistant'}]