Public health priority: Routine
PHU response time: Enter on NCIMS within 5 working days of notification.
Case management: Responsibility of treating doctor.
Contact management: Responsibility of treating doctor. PHUs should assist if requested.
To monitor the epidemiology of the disease and so inform prevention strategies.
A confirmed case requires isolation of Haemophilus ducreyi from a lesion exudate.
Diagnosis is made by isolation of the organism on a specific medium. The laboratory should be notified if chancroid is suspected.
Chancroid is to be notified by laboratories on diagnosis (ideal reporting by routine mail).
Only confirmed cases should be entered onto NCIMS.
The bacillus Haemophilus ducreyi.
By direct sexual contact with discharges from open lesions and pus from buboes. Autoinocculation to non-genital sites may occur in infected people.
The typical incubation period is 3 to 5 days, but can be up to 14 days.
Chancroid may be communicable from infection until the lesions are healed. Discharging lymph nodes can persist for several months without treatment. Effective antibiotic therapy eradicates the organism, and lesions heal in 1 to 2 weeks.
The usual clinical presentation is characterised by single or multiple painful necrotising ulcers in the genital area, frequently accompanied by painful swelling and suppuration of the regional lymph nodes (buboes).
Within 5 working days of notification enter confirmed cases on NCIMS.
In general, the attending medical practitioner is responsible for treatment. Specialist advice is usually required. Refer to Therapeutic Guidelines: Antibiotic.
In general, the case's doctor provides education and counselling. The medical practitioner should provide information to the case about the nature of the infection and the mode of transmission.
Sexual contacts in the 10 days before the ulcer appeared or since arrival from an endemic area.
The treating doctor is responsible for contact tracing. PHUs should work with Sexual Health Service staff to assist if requested. Contacts require counselling, examination, and culture and treatment of any lesion.
Case clustering, for example among clients of a sex industry establishment, may indicate the need to initiate an education and/or screening program to meet local requirements.