Haemophilus ducreyi causes chancroid, a painful genital ulcer disease that can facilitate HIV transmission. Although rare in many regions, it is included in PCR panels for comprehensive genital ulcer diagnosis (Workowski et al. 2021).
Workowski, K. A., Bachmann, L. H., Chan, P. A., Johnston, C. M., Muzny, C. A., Park I., Reno, H., Jonathan M. Zenilman J.M.,Bolan, G. A. (2021). Sexually transmitted infections treatment guidelines, 2021. MMWR Recommendations and Reports, 70(4), 1–187. https://doi.org/10.15585/mmwr.rr7004a1