Isolation and Characterization of a New Human Microsporidian, Encephalitozoon hellem (n. sp.), from Three AIDS Patients with Keratoconjunctivitis

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Abstract
Campylobaeter species were isolated from 93 (15%) of 631 Thai children with diarrhea using the membrane filter technique on nonselective blood agar incubated at 377#x00B0;C. Campylobaeter jejuni was isolated from 62 (10%), Campylobaeter coli from 14 (2%), and atypical campylobacters from 17 (3%). The 17 atypical strains were first characterized biochemically and by dot blot DNA hybridization. Catalase-negative strains also were characterized byDNA hybridization and ribotype pattern. One strain was a catalase-negative “Campylobaeter upsaliensis” and another was a nitrate-negative Campylobaeter jejuni doylei. Fifteen isolates were aerotolerant strains most closely resembling Campylobaeter eryaerophila or “C. upsaliensis” by dot hybridization. These aerotolerantstrains, designated group 2 (“Campylobaeter butzleri”"),had ribotypes distinct from C. eryaerophila and have previously been shown to be related by DNA hybridization at the species level to the group 2 aerotolerant Campylobaeter type strain (D2686). Group 2 aerotolerant Campylobaeter were the atypical Campylobaeter species most frequently isolated from Thai children with diarrhea.

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