Clinic visits for treatment of sexually transmissible diseases alone have increased by almost 80 percent since 1984.

Blood donors are now asked specific and very direct questions about risk factors that could indicate possible infection with a transmissible disease.

Human errors such as misidentifying patients and drawing blood samples from the wrong person present much more of a risk than transmissible diseases.

This is because epidemics may also be regarded in terms of proportion of people infected with a transmissible disease.

Some diseases transmissible by the sexual route include (at least):

"By contrast, informed consent is not required to test for communicable or sexually transmissible diseases."

Then there are persons tainted with certain foul and transmissible diseases.

This programme should also give greater consideration to the risks arising from transmissible diseases, including in the candidate countries.

The first requirement that has arisen concerns health, especially the spread of transmissible diseases.

A transmissible disease will spread easily in such conditions.