Distribución ambiental de Cryptococcus neoformans en el departamento de Cundinamarca-Colombia

C. neoformans was isolated from 46% of the studied municipalities, in both transects and the thermal floor: warn, temperate and cold. The results indicated that the greater frequency of positive isolations came from the last thermal floor. The population density in pigeon excrements oscillated between 50 and 9.2 × 106, in eucalyptus between 50 and 1 × 107 and almendros was 50 CFU/g. Of 104 positive isolations 31% were serotype A, 59% serotype B and 10% serotype C; 96% of the isolates grew to 37 °C and all showed capsule. In conclusion, C. neoformans prevails in the three habitats studied but it showed a predilection for the cold thermal floor; the population densities did not allow defining a standard pattern of occurrence.