Souza, Maria de Fátima deFrança, Pedro Ivo Araújo de2019-01-022022-05-252019-01-022022-05-252018-12-06FRANÇA, Pedro Ivo Araújo de. Panorama da criptosporidiose no Brasil: aspectos epidemiológicos. 2018. 48 f. Trabalho de conclusão de curso (Graduação em Ciências Biológicas) - Curso de Ciências Biológicas, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, 2018.https://repositorio.ufrn.br/handle/123456789/47296Cryptosporidiosis is a important disease provoked by single-celled parasites of the genus Cryptosporidium (Class Gregarinomorphea), wich mainly affect children and immunocompromised people, especially HIV-infected people. The infection occurs with ingestion of water or food contaminated with oocysts, or by direct contact between healthy people with infected people or animals. The bovine (Bos taurus), caprine (Capra hircus) and ovine (Ovis aries) herds are important reservoirs for Cryptosporidium species with zoonotical potential, specially Cryptosporidium parvum, wich added to Cryptosporidium hominis cause the majority of human cases and outbreaks. The goal of this work was describe the prevalence and geographic distribution of the Cryptosporidium species in human population and livestock in Brazil, also ambiental contamination by oocists; to contribute with a better understanding of the importance of the zoonotic and anthroponotic cycles in our country. Therefore where selected articles in MEDLINE, Scielo and Periódicos CAPES, in a period of twenty years (1997-2017). The searches were made with the following terms: “Cryptosporidium”, “Brazil”, “epidemiology”, “cattle”, “goats”, “sheep”, “environment”, “molecular characterization” and “genotyping”. The search resulted in 78 articles, with 42 were selected. In cattle, the prevalence of infection varied between 3% and 45%, mainly caused by C. parvum. The species C. andersoni, C. bovis and C. ryanae were also detected. To goats and sheep, the prevalence was 0% to 25% and 7,5% to 40,5%, respectively. The Cryptosporidium species characterization was made only in infected sheep, with predominance of the zoonotic specie Cryptosporidium ubiquitum. The prevalence in human population varied between 1,1% and 41,7%, in immunocompetent and immunocompromised people, respectively, wich C. hominis being the most frequent specie. All articles about ambient contamination related positivity for Cryptosporidium oocysts. In Brazil, the prevalence of this disease is high in both livestock and human populations. In human populations, the anthroponotic cycle is the major path of infection. The major specie that infect livestock is C. parvum, but the occurrence of specific-species for each animal species is common.Attribution-NonCommercial-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-nd/3.0/br/Cryptosporidium parvumCryptosporidium hominisCriptosporidiose animalCriptosporidiose humanaCriptosporidiose em imunocomprometidosbachelorThesisParasitologia; Protozoologia Parasitária humana; Protozoologia parasitária animal.