Severe Keratitis Caused by Acanthamoeba Genotype T12 in Thailand: A Case Report

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Abstract

Acanthamoeba keratitis is predominantly caused by genotype T4. We report a case of severe keratitis caused by Acanthamoeba in a 39-year-old man who had prior accidental exposure to a corrosive chemical. The patient developed central full thickness ring infiltration and epithelial defect with hypopyon that required keratoplasty. The acanthamoebae isolated from the patient exhibited thermotolerance phenotype with the capability to grow well at ambient temperature and at 42°C. Analysis of a near complete 18S rRNA gene of this isolate revealed a distinct sequence that can be unequivocally assigned to genotype T12, a rare genotype incriminated in corneal infections.

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Satitpitakul, V., Putaporntip, C., & Jongwutiwes, S. (2022). Severe Keratitis Caused by Acanthamoeba Genotype T12 in Thailand: A Case Report. American Journal of Tropical Medicine and Hygiene, 106(2), 681–684. https://doi.org/10.4269/ajtmh.21-0666

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