上游充通大 SHANGHAI JIAO TONG UNIVERSITY Travelers may be exposed to diseases for which there are no effective immunizations (e.g.AIDS,Ebola hemorrhagic fever,dengue fever),they should take appropriate precautions to prevent infection.如果疫区的 该疾病无免疫方法，如艾滋病、埃博拉出血热、登革热等， 则..小心为上 Avoid unprotected sex ·Avoid insect bites ·Drink treated water Eat properly prepared food 22 上海交通大学通识教育核心课程《微生物的世界》22 上海交通大学通识教育核心课程《微生物的世界》 Travelers may be exposed to diseases for which there are no effective immunizations (e.g. AIDS, Ebola hemorrhagic fever, dengue fever), they should take appropriate precautions to prevent infection.如果疫区的 该疾病无免疫方法，如艾滋病、埃博拉出血热、登革热等， 则……小心为上 • Avoid unprotected sex • Avoid insect bites • Drink treated water • Eat properly prepared food • ……