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. 1982 Jan;15(1):61–63. doi: 10.1128/jcm.15.1.61-63.1982

Dark-field microscopy of human feces for presumptive diagnosis of Campylobacter fetus subsp. jejuni enteritis.

J W Paisley, S Mirrett, B A Lauer, M Roe, L B Reller
PMCID: PMC272024  PMID: 6764779

Abstract

To determine the value of direct dark-field microscopy for diagnosing enteritis due to Campylobacter fetus subsp. jejuni, we examined 1,377 human fecal specimens for bacteria with typical Campylobacter darting motility, leukocytes, and erythrocytes. Eighty-four specimens (6.1%) grew C.fetus subsp. jejuni. Of the 48 specimens showing Campylobacter motility, 30 (62%) grew C. fetus subsp. jejuni. The sensitivity, specificity, and predictive value of observing Campylobacter motility were 36%, 99%, and 62%, respectively. The predictive value of detecting Campylobacter motility was improved if the specimens were diarrheal (23 of 31, 74%), leukocytes were present (25 of 33, 76%), erythrocytes were present (22 of 27, 81%), or if all of the above findings were present (18 of 20, 90%). The sensitivity of detecting Campylobacter darting motility was highest if specimens were examined within 2 h of arrival in the laboratory (15 of 30, 50%) as opposed to after 2 h (15 of 53, 28%; P less than 0.01). Prompt dark-field microscopic examination of diarrheal stool specimens is valuable for the presumptive diagnosis of Campylobacter enteritis.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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