CLINICAL DESCRIPTION

A sexually transmitted disease characterized by painful genital ulceration and inflammatory inguinal adenopathy. The disease is caused by infection with Haemophilus ducreyi.

  CASE CLASSIFICATION

1. CONFIRMED

   A clinically compatible case that is laboratory confirmed by:

   • Isolation of H. ducreyi from a clinical specimen

2. PROBABLE
   

   • A clinically compatible case with both a) no evidence of Treponema pallidum infection by darkfield microscopic examination of ulcer exudate or by a serologic test for syphilis performed ≥ 7 days after onset of ulcers, and b) either a clinical presentation of the ulcer(s) not typical of disease caused by herpes simplex virus (HSV) or a culture negative for HSV.

3. POSSIBLE
   
   

   • Not used