When KM mice were immunosuppressed with 5 mg/L DEX in drinking water, and were inoculated intragastrically with 105 CSO, a mouse model infected C. parvum could be established steadily.

• KM鼠饮水中加 DEX5 mg/L,每只小鼠接种 10 5个 CSO,可以建立稳定的感染模型。