Why Leeches Should be Sterile and Disposable?

Why must leeches be disposable and sterile?

Leeches are disposable and are used only once to eliminate the possibility of transmitting blood-borne diseases such as hepatitis, AIDS, etc.

Moreover, medical leeches cannot excrete bioactive agents for 6 months after use. After a leech has been used in treatment, it must be disposed of as medical waste. Used leeches must not be thrown into streams and rivers or used again.

Treatments must always be carried out with sterile and disposable leeches. Leeches are effective if they are used only once.