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Oral transmission of bacteria

Patient: How is Gonorrhea/Chlamydia transmitted via oral sex? Is this a common form of transmission and if so, is it known how common?



Symptoms: Burning urination, discharge, delayed urination, weak urine flow, cloudy urine



Doctor: Hello,Thanks for contacting for an opinion.Chlamydia and gonorrhea are transmitted through vagin al, anal or oral sexual contact. Though oral sex is otherwise considered safe with respect to transmission of sexually transmitted diseases but if a person who is not infective gives an oral sex to a person harboring chlamydia infection and then after contracting the infection has oral sex with another partner , then he/ she can transmit these STIs to the third person. The incidence is around 25-30% in the world and have been an accepted route of transfer.Specifically, oral gonorrhea (also termed pharyngeal gonorrhea) is defined as an STD infection of the pharynx with Gram-negative coccal-shaped (round) bacteria named Neisseria gonorrhoeae. Infection is acquired from direct contact with white/yellowish pus-like fluid containing N. gonorrhoeae (also termed discharge or exudates) in one sex partner. This discharge is caused by N. gonorrhoeae. It mixes with a person’s vaginal fluids, seminal fluids, or mucus membranes near the anus and rectum that come in contact with another person’s oral mucus membranes. The bacterial infection then establishes itself in the pharynx and may be asymptomatic (cause no symptoms), but can cause symptoms of sore throat and discomfort when swallowing food. The affected throat resembles a strep throat with redness and occasionally may have some white spots or whitish/yellow discharge.Men may have mild burning with urination and may notice a yellow to gray penile discharge with or without testicular pain. Symptoms may resolve without treatment even though the infection is still present. Examination is recommended for symptoms of discharge or pain and burning with urination even if the symptoms have spontaneously resolved. Gonorrhea symptoms may develop within 2-10 days, but symptoms may take up to 30 days before they appear, while chlamydia symptoms may occur 7-21 days after exposure.So, considering that you have all the symptoms of a urinary tract infection with burning micturition , cloudy urine and weak flow and a possible lower abdominal and lower back pain as well, it would be wise to get a urine culture and a urethral swab culture be done to isolate the possible causative organisms which may be chlamydia with concomitant gonorrheal infection, though other organisms like e.coli, mycoplasma and ureoplasma can also cause UTI.Hence depending on the culture report and isolation, your physician may place you on antibiotics for a week . It is important that you complete the course of treatment and avoid any sexual activity till you complete your course and rendered free from infection.I hope i have answered your query in detail,wishing you good health,regards

Comments / Follow Ups

Patient: How is it transmitted to the receptive person during oral sex?

Doctor: It can be transmitted from if the person giving oral sex is already infected with chlamydia , having acquired the same from a previous partner during oral sex. So, it is most commonly seen in people who have multiple sexual partners, be it men or women.

Patient: Is this because infected saliva from the bacteria gets inside the urethra?

Doctor: possibly yes. thats a possibility yes.


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Dr. Suneel Sharman M.D.

Dr. Suneel Sharman M.D.

Dr. Suneel Sharman completed his residency in Family Medicine at the University of Toronto. He currently operates Infinity Health Centre, a walk-in-clinic in downtown Toronto.

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