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Those who do not remember the past are condemned to repeat it 谁不记得过去的人注定要重蹈覆辙Questions to be addressed · What are their Epidemiology?· How are they transmitted? · What are the sources of transmission? · What are their clinical features?· How to make a diagnosis?· Any treatment options available for them?· Any vaccines available?Epidemiology of SARS George Santayana (Spanish philosopher, essayist, poet, and novelist)乔治·桑塔亚那西班牙裔美國哲學家、散文家、詩人、小說家