This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Social & Preventive Medicine
[{'content': 'Leptospira icterohaemorrhagiae infection is transmitted by the following animals \nSelect and explain. \nA. Rats, B. Dogs, C. Birds, D. Bats', 'role': 'user'}, {'content': "Answer: A \nExplanation: (A) Rats # Leptospiral infection Serotype: Icterohaemorrhage Disease: Weil's disease Clinical picture: Fever, jaundice, haemorrhages Animal reservoir: Rat Distribution: Worldwide> Several animals act as carriers for Leptospira.> Rats are particularly important for Leptospira as they are ubiquitous and carry most pathogenic serotype iceterohemorrhagiae.> Source of Infection of Leptospira : Leptospira are excreted in the urine of infected animals for a long time, often for an entire life time in cases of rodents> Animal Reservoirs: Leptospirosis affects wild and domestic animals worldwide especially rodents such as rats, mice and voles.", 'role': 'assistant'}]