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Activity of bleach, ethanol and two commercial disinfectants against spores of Encephalitozoon cuniculi by Carly N. Jordan; Jennifer A. DiCristina; David S. Lindsay is a Immunology and Microbiology article available to read on EtoBox.

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Encephalitozoon cuniculi is a small protist parasite in the phylum Microspora. Hosts are infected by ingestion or inhalation of spores passed in the urine or feces. Infection with E. cuniculi is usually asymptomatic, except in young or immunocompromised hosts. This study examined the effects of various disinfectants on in vitro infectivity of E. cuniculi spores. Spores of E. cuniculi were exposed to several dilutions of commercial bleach, 70% ethanol and dilutions of commercial disinfectants HiTor and Roccal for 10 min and then loaded onto human fibroblast cells (Hs68 cells). Ten minutes of exposure to these disinfectants was lethal to E. cuniculi spores. Additional exposure time studies were done using dilutions of bleach at 0.1, 1 and 10%, and 70% ethanol. Exposure of E. cuniculi spores to 1 or 10% bleach for 30 s rendered them non-infectious for Hs68 cells. Growth of E. cuniculi was observed in Hs68 cells inoculated with spores treated with 0.1% bleach for 30 s or 1, 3 and 5 min, but not with spores treated for 7 min or longer. Exposure of E. cuniculi spores to 70% ethanol for 30 s rendered them non-infectious for Hs68 cells. Spores of E. cuniculi are more sensitive to disinfect

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Author

Carly N. Jordan; Jennifer A. DiCristina; David S. Lindsay

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0304-4017)

Published

2006

Language

EN

Field

Immunology and Microbiology (Life Sciences)