（3）真菌和原虫：真菌感染主要为白色念珠菌（Candidaalbicans），一些原虫的感染如蓝氏贾第鞭毛虫（Giardialam-blia）、结肠小袋虫（Balantidiumcoli）、隐孢子虫（Cryptosporidi-um）及阿米巴原虫（Entamoebahistolytica）等。
O O O B-mic I-mic O B-mic I-mic O B-dis I-dis I-dis I-dis O O O B-mic I-mic I-mic I-mic I-mic O B-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic O O O O O O O O O O B-mic I-mic I-mic I-mic I-mic I-mic I-mic O B-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic O O B-mic I-mic I-mic I-mic I-mic O B-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic O O B-mic I-mic I-mic I-mic O B-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic O O B-mic I-mic I-mic I-mic I-mic O B-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic I-mic O O O