[Endemic incidence of Mycobacterium kansasii infection in Karvina District 1968-1999; overview of the descriptive characteristics].

The objective of the submitted work was to present a summary of basic epidemiological data in a group of 1034 subjects from whom during the period between 1968-1999 Mycobacterium kansasii was isolated. In the analysis of the group principles of the descriptive epidemiological method were used. In the first years, when diseases were recorded and the number of cases increased, epidemiologists of the District Hygiene Station in Karviná made an investigation.

Endemic incidence of infections caused by Mycobacterium kansasii in the Karviná district in 1968-1995 (analysis of epidemiological data--review).

The Karviná district (northwestern part of North Moravia and Silesia) is typical by its industrial character, above all mining of black coal which is coked and which led to the devastation of the countryside. The ratio of light industry is low. In a small area (347 km2) there is a population of 824 inhabitants per km2.

Endemic occurrence of Mycobacterium kansasii in water-supply systems.

Of a total number of 1079 drinking water and colliery service water samples examined in an area of the North-Moravian Region Czechoslovakia, characterized by endemic occurrence of M. kansasii infections, 233 [21.6%] samples were found to be contaminated by mycobacteria, of these 20 [1.