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': 'Brucellosis can be transmitted by all of the following modes, except: \nSelect and explain. \nA. Contact with infected placenta, B. Ingestion of raw vegetables from infected farms, C. Person to person transmission, D. Inhalation of infected dust or aerosol', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Person to person transmission(Ref: Harrison, 19th/e, p. 1066 and Ananthanarayan, 9th/e, p. 339)Transmission - Contact with infected animals (Camel, sheep, goat, pigs) - Placenta, urine, milk and other discharges. Inhalation of infected dust or aerosols. Contaminated food products and ingestion of raw vegetables form infected farms.People at risk - Farmers, shepherds, goatherd, butters and abattoir workers. Man to man transmission does not occur.", 'role': 'assistant'}]