Genotypic diversity of Acanthamoeba strains isolated from Chilean patients with Acanthamoeba keratitis Jercic, María Isabel Osuna Carrillo De Albornoz, Antonio Acanthamoeba keratitis T4 genotype T11 genotype T2 genotype ASA.S1 Acanthamoeba spp. are the causative agents of a severe keratitis occurring mainly in contact lens wearers. The genus comprises more than 24 species that are currently divided into 20 different genotypes (T1-T20) according to sequence variations in the 18S rRNA gene. The objective of this study was to identify the genotypes and sub-genotypes of Acanthamoeba isolates collected at the Parasitology Laboratory of the Public Health Institute of Chile, the only laboratory in the country where Acanthamoeba screening is performed. This is the first report of genotypic identification of clinical isolates of Acanthamoeba in Chile and one of the few in South America. T2, T4 and T11 genotypes were predominantly isolated from the Acanthamoeba keratitis patients in Chile. Chilean predominant T4 sub-genotypes, which have also been reported worldwide, formed a separate cluster of the minority T4 variants. This study provides useful information about the predominant genotypes and subgenotypes that would be useful in selecting suitable strains to develop immunological and/or molecular diagnostic assays in Chile. 2020-02-05T11:12:14Z 2020-02-05T11:12:14Z 2019 journal article Jercic, M. I., Aguayo, C., Saldarriaga-Córdoba, M., Muiño, L., Chenet, S. M., Lagos, J., ... & Fernández, J. (2019). Genotypic diversity of Acanthamoeba strains isolated from Chilean patients with Acanthamoeba keratitis. Parasites & vectors, 12(1), 58. http://hdl.handle.net/10481/59445 10.1186/s13071-019-3302-5 eng http://creativecommons.org/licenses/by/3.0/es/ open access Atribución 3.0 España Springer Nature