ABSTRACT
Any body of water used for recreational purposes, be it a swimming pool, pond, or lake, has the potential for being a source of contagion, not only of bacteria, viruses, and various enteric protozoan parasites, but also by the soil amoeba Naegleria graberi and related species. The first doumented case of primary amoebic meningeoencephalitis (PAM) caused by N. gruberi was reported from Australia in 1965. PAM is a disease confined to the central nervous system. A very basic problem in dealing with PAM is the assessment of its occurrence under various conditions, in various locales. Amoebic blooms were noted in conjunction with elevated temperature, nutrient enrichment, and increased densities of other protozon and infusoriform organisms. Another aspect of project management deals with insect vector control, principally mosquitoes, which could carry viral encephalitis. Assuming proper sewage disposal procedures are practiced in the vicinity of the project, pathogenic organisms associated with septic discharges should be minimized.
