人类免疫缺陷病毒[HIV]病造成的多发性感染 HIV disease with multiple infections
只需要吸入少量杆菌就可造成感染。
Only a small number of the bacilli need to be inhaled to cause an infection.
即使是小的伤口，如果不对它们进行处理，也会造成感染。
Even minor cuts can become infected if they are left untreated.
在水中，淡水螺中释放出的尾蚴侵入人体皮肤，造成感染。
Larval forms of the parasites, which are released by freshwater snails, penetrate the skin of people in the water.
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