A total of 50 dwellings were examined to establish the presence of the Histoplasma capsulatum fungus in guano, with the aim of determining the relationship between the presence of the fungus, the environmental conditions of the shelter and the bat species present. There was no evidence of the presence of H. capsulatum by direct observation and Sabouraud agar plating with Oxytetracycline, but there was evidence of fungi that are important for human health, such as Aspergillus sp., Penicillium sp., Rhizopus sp., Mucor sp. and Oospora sp. Three species of bats were identified, Molossus molossus being the most frequent, followed by individuals of the genus Artibeus sp. and a lesser extent Glossophaga soricina. It was found that temperature and humidity conditions of the shelters most used by bats have asbestos cement roofs and styrofoam ceilings or clay roofs in polystyrene ceilings. These materials create an attractive interior environment that is exploited mainly by the Molossus molossus and Glossophaga soricina, unlike the genus Artibeus that preferred open sites. We recommend further studies and testing with other diagnostic techniques because the negative results for the presence of H. capsulatum do not necessarily; also to intensify research to determine any possible risks to human health from the other fungi found during the study. The project was carried out by the developed by the Veterinary Medicine and Zootechnics Faculty at the Universidad Cooperativa de Colombia, by the Animal Science Research Group (Grica) epidemiology research line.

The geographical position of Colombia, their climatic conditions make it ideal as a biological niche to a great quantity of agents including the parasitic ones, which have been reported in neighboring countries. This case reports the discovery in canine of the parasite hepatozoon. The Hepatozoon canis was reported first in the India in 1905, and from then on it has been shown to infect dogs in the entire world (Macintire, 1999). The hepatozoonosis is an illness generated by an apicomplexo protozoan blood parasite investigated for the first time in Texas (EE.UU) in 1978 where gametocytes of Hepatozoon was identified in neutrophils circulating of 3 dogs. (Craig et al. 1978). The Hepatozoonosis is an illness transmitted by the Rhipicephalus sanguineus ticks whose distribution is endemic in States united in the states of Texas, Oklahoma and Louisiana; also Brazil, Europe (mediterranean region) Asia ( Japan, Malaysia, Philippines and Middle East) and África.