Gonorrhoea is caused by the Gram-negative bacterium Neisseria gonorrhoeae. The common sites of infection include the urethra, the endocervix, the rectum, the pharynx and the conjunctiva.
References
Bignell, C., & FitzGerald, M. (2011). National Guideline on the Diagnosis and Treatment of Gonorrhoea in Adults. Retrieved from http://www.bashh.org/documents/3611
McMillan, I.R., Young, H., Ogilvie, M.M., & Scott. R.G. (2002). Clinical Practice in Sexually Transmissible Infections. London: Saunders Ltd.
Cook, R.L., Hutchison, S.L., Østergaard, L., Braithwaite, R.S., & Ness, R.B. (2005). Systematic Review: Non-invasive Testing for Chlamydia Trachomatis and Neisseria Gonorrhoea. Ann Intern Med, 142: 914-925. Retrieved from PubMed.
Tapsall, J.W, Ndowa, F., Lewis, D.A., & Unemo, M. (2009). Meeting the Public Health Challenges of Multi and Extensively-Drug Resistant Neisseria gonorrhoea. Expert Rev Anti Infect Ther, 7:821-34. Retrieved from PubMed.