Infected stallions are asymptomatic and act as the principal source of infection as they mate with numerous mares, and the carrier status may persist for many months or even years.
Diagnosis of CEM is achieved by PCR or culturing the organism from urethral fossa, urethra, and semen of stallions and the clitoral sinus and clitoral fossa of mares. One or two swab(s) from smegma of clitorial sinuses and/or fossae are taken and transferred in AMIES transport medium with charcoal at 4°C to a laboratory. The volume of the sample on the swab is not relevant, as even a low volume of smegma may harbor this pathogen.
- George M. Garrity: Bergey's Manual of Systematic Bacteriology. 2. Auflage. Springer, New York, 2005, Vol. 2: The Proteobacteria Part C: The Alpha-, Beta-, Delta-, and Epsilonproteabacteria ISBN 0-387-24145-0
- Ghasemzadeh Nava, H., Salehi, T.Z., Eliasi, M.A., Gharagozloo, F., Rezagholizadeh, R. and Tajik, P.(2008) An outbreak of contagious equine metritis (CEM) from a stud farm in Iran: the first report of Taylorella equigenitalis isolation from Iran. 15 th Congress of FAVA, 27-30 October, Bangkok, Thailand, p 359-360
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