Endemicity and enzooticity aspects of leptospirosis
The review covers the main definitions and criteria for endemicity and enzooticity relating to natural focal zoonotic infections and, in particular, to leptospirosis. Since leptospirosis is widespread, and almost all territories are endemic for this disease, it is proposed to allocate a high, medium and low degree of endemicity on the basis of several criteria, primarily the population morbidity. The unevenness of endemicity is also important in the epidemiological analysis of the leptospirosis situation.