In addition, because obesity is not a unicentric epidemic, there's not a Patient Zero of the obesity epidemic -- if we find that guy, there was a spread of obesity out from him -- it's a multicentric epidemic.
更何况，肥胖症并不是只有单一的中心的流行病， 没有肥胖流行病的“零号病人”── 如果找到这个人，那么肥胖症就是从他那边传出来的。 但相反，肥胖病的流行有多个中心，