[Acid-fast bacilli in the water of the Lake of Aleixo].

The presence of acid-fast bacilli in the waters of the lake of Aleixo is recorded. This site is a hanseniasis colony. The physical-chemical environment of this lake is described by an annual cycle and it is intended to relate the quality of the water to the highest or to the lowest frequency of detected mycobacteria. It is suggested that the work in this lake system should be continued towards a more specific characterization of these microorganisms and the determination of their viability.