CHANCROID
| Causative organism | Haemophilus ducreyi |
| Incubation period | Usually 3 to 5 days, can be up to 14 days. (SoNG) |
| How far to trace back | 14 days or since arrival in endemic area, whichever is shorter (SONG, US, European guidelines) |
| Usual testing method | Nucleic acid amplification testing or culture |
| Common symptoms | Anogenital ulcers; enlarged tender inguinal nodes (buboes) which may breakdown and discharge |
| Likelihood of transmission per act of unprotected intercourse | High |
| Likelihood of long-term sexual partner being infected | High; asymptomatic infection is thought to occur sometimes in people assigned female at birth |
| Protective effect of condoms | Probably high |
| Transmission by oral sex | Rare |
| Duration of potential infectivity | Weeks |
| Important sequelae | Local tissue destruction, inguinal abscesses and draining sinuses |
| Direct benefit of detection and treatment of contacts | Cure |
| Usual management of contacts |
Counselling, clinical examination and testing of lesions for chancroid Presumptively treat partners see Australasian STI Management Guidelines for treatment quidelines |
| Contact tracing priority | High, as not endemic in Australia or New Zealand. Specialist support for contact tracing should be sought if local acquisition or transmission is possible |
| Notification |
Notifiable in most Australian states and territories except ACT, Tasmania and Victoria: Check local guidelines and seek specialist contact tracing support. Notifiable: NSW: Doctors and laboratories on diagnoses NT: Doctors and laboratories QLD: Laboratory only SA: Doctors and laboratories WA: Doctors and laboratories Not notifiable in New Zealand |
References
https://www.cdc.gov/std/tg2015/chancroid.htm
https://www.health.nsw.gov.au/Infectious/controlguideline/Pages/chancroid.aspx
Page last updated May 2021