Br Med J. 1974 Apr 6;2(5909):41-4.
A four-category isolation system has been used for three years. It is based on the principle that different precautions are needed against different diseases. There are three types of source isolation and one of protective isolation. Coloured door cards indicate the main precautions on the front and the main diseases to which they apply on the back. The system encourages application of effective precautions without waste of effort on those that are irrelevant to some diseases.
一种四类隔离系统已使用了三年。它基于针对不同疾病需要采取不同预防措施的原则。有三种源隔离类型和一种保护性隔离类型。彩色门卡正面标明主要预防措施,背面标明适用的主要疾病。该系统鼓励采取有效的预防措施,避免在与某些疾病无关的措施上浪费精力。