A collection of Campylobacter fetus strains, including both C. fetus subsp. fetus and C. fetus subsp. venerealis, were phenotypically identified to the subspecies level and genotypically typed by PCR and amplified fragment length polymorphism (AFLP) analysis. Phenotypic subspecies determination methods were unreliable. Genotyping of the strains by PCR and AFLP showed a clear discrimination between the two subspecies.
Wagenaar, J. A., van Bergen, M. A. P., Newell, D. G., Grogono-Thomas, R., & Duim, B. (2001). Comparative study using AFLP fingerprinting, PCR genotyping and phenotyping for differentiation of Campylobacter fetus strains. Journal of Clinical Microbiology, 39, 2283-2286. https://doi.org/10.1128/JCM.39.6.2283-2286.2001