Dr Galvani looked at a classic example of a case where the best choice for the individual may not lead to an optimal outcome for society: vaccination.

他探究了一个案例中的一个典型的例子, 并发现对某些对个人好的事物可能并不会给社会带来同样好的结果, 那便是接种疫苗的问题.

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For in order to obtain a robust result, Drs Medlock and Galvani considered two different sorts of epidemic and five different definitions of an optimal conclusion.

为了获得一个站得住脚的结论，Jan Medlock博士和Alison Galvani博士考虑了2种不同流感及一个最优结论的5种不同定义。

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Dr Galvani asked almost 600 university employees about their attitudes towards flu jabs for themselves and their families.

ECONOMIST: Flu vaccination

Dr Medlock and Dr Galvani reckon that if their approach were followed, that might be cut to just over 60m.

ECONOMIST: Influenza vaccination

Dr Galvani and her colleagues recognised that this was unlikely to be completely correct, even among people working in American universities.

ECONOMIST: Flu vaccination