144 HUMANE TREATMENT OF ANIMALS USED IN RESEARCH 
tories as representing facilities for the treatment and diagnosis 
of animal diseases. True, such laboratories might be used for 
these purposes, but, in practice, seldom were. 
Thirty percent of reporting institutions indicated that 
they were investigating diseases of laboratory animals incidental 
to their research programs. It was the opinion of the surveyors 
that many of these projects were in the nature of casual observa- 
tions on animals rather than research on a particular infectious 
disease problem. 
Movement of laboratory personnel was restricted in 
part (39%) . Although all institutions practiced some form of 
insect and rodent control, methods of control varied greatly. 
About 507° employed commercial rodent control firms. 
Most of the institutions (847°) required animal care 
personnel to wear other than street clothing. Most of the 
clothing (927°) was furnished and laundered by the institutions. 
Incineration was the most common method of disposing 
of animal carcasses and animal refuse, although central collec- 
tion services were also used. 
It would appear that the general attitude toward dis- 
ease control stems from a concept prevalent in the institutions 
themselves - that the chief function (and perhaps the only 
function) of the animal area is as a holding and service area. 
Most individuals recognize the need for competent management of 
disease problems once a research project is launched. However, 
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