secondary level of prevention

• 第二级预防

secondary level of prevention的用法和样例：

例句

1. METHODS Three-grade prevention strategy was introduced into control of nosocomial infection.
   方法将三级预防策略应用在医院感染控制中。
2. Tertiary prevention is by the treatment of cases or carriers so that they do not spread the organism any further.
   三级预防的实现是通过治疗患者和病原携带者，从而使他们不再传播病原体。