请教新题63篇中的一个问题

baobao1010

Poliomyelitis, for example, emerged as an epidemic in the United States in the twentieth century; by then,
                modern sanitation was able to delay exposure to polio until adolescence or adulthood, at which time polio infection produced paralysis. Previously, infection had occurred during infancy, when it typically provided lifelong immunity without paralysis. Thus, the hygiene that helped prevent typhoid epidemics indirectly fostered a paralytic polio epidemic.

1.     The passage suggests that a lack of modern sanitation would make which of the following most likely to occur?

(A) An outbreak of Lyme disease

(B) An outbreak of dengue hemorrhagic fever

(C) An epidemic of typhoid

(D) An epidemic of paralytic polio among infants（C）

(E) An epidemic of paralytic polio among adolescents and adults

划线的部分让我产生歧义，选项D也是正确的啊？也许我钻了牛角尖，有谁能指点迷津，谢谢！

nuj_am

(D) An epidemic of paralytic polio among infants（C）
                    

注意D项中的paralytic, 文中说了如果polio在infant发病就不会导致paralytic的

注意D项中的paralytic, 文中说了如果polio在infant发病就不会导致paralytic的

baobao1010

thanks!