Gonorrhea spreads through vaginal, anal, or oral sex with someone who has the infection. The bacteria responsible, called Neisseria gonorrhoeae, passes between people through contact with infected mucous membranes and the fluids they produce. In 2024, over 543,000 cases were reported in the United States alone, making it one of the most common sexually transmitted infections in the country.
How the Bacteria Passes Between People
Gonorrhea is transmitted through direct sexual contact. The bacteria live on the warm, moist surfaces inside the genitals, rectum, and throat, and they move from one person to another when those surfaces come into contact during sex. Any form of unprotected sexual activity can transmit it: vaginal intercourse, anal intercourse, and oral sex (both giving and receiving).
The infection can establish itself in different parts of the body depending on the type of contact. Vaginal sex can lead to infection of the cervix, uterus, or urethra. Anal sex can infect the rectum. Oral sex, particularly performing it on someone with a genital infection, can lead to a throat infection. These infections at different sites can occur independently or at the same time, and each site can then serve as a source for passing the bacteria to a future partner.
Why Many People Spread It Without Knowing
One of the biggest reasons gonorrhea continues to spread is that many people who carry it have no symptoms at all. This is especially true for women, who are more likely than men to have a “silent” infection. Throat and rectal infections are also frequently asymptomatic in people of any sex. Someone can feel perfectly fine and still pass the bacteria to a partner during unprotected sex.
When symptoms do appear, they typically show up within a few days of exposure, though the exact timeline varies. In men, symptoms often include a burning sensation during urination and discharge from the penis. In women, symptoms can be milder or mistaken for a bladder or vaginal infection, which is part of why so many cases go undiagnosed. Because the infection doesn’t always announce itself, routine screening is the most reliable way to catch it early and prevent unknowing transmission.
Transmission During Childbirth
A pregnant person with gonorrhea can pass the infection to their baby during vaginal delivery. The baby’s eyes are exposed to the bacteria in the birth canal, which can cause a serious eye infection called ophthalmia neonatorum. Left untreated, this infection can damage the surface of the eye and lead to blindness. In rarer cases, the bacteria can also cause more widespread problems in the newborn, including joint infections and meningitis.
Because of this risk, antibiotic eye ointment is applied to every newborn’s eyes shortly after birth as a standard precaution, regardless of how the baby was delivered. Prenatal screening for gonorrhea allows infections to be treated before delivery, significantly reducing the chance the baby will be exposed.
Can You Get It From a Toilet Seat?
This is one of the most common questions about gonorrhea, and the short answer is that casual, non-sexual transmission is extremely unlikely. The bacteria are fragile outside the human body. Lab studies have found that gonorrhea can survive on a toilet seat for up to about 2 hours, on toilet paper for roughly 3 hours, and on a towel for up to 24 hours under specific conditions. On dry fabric, it dies within 2 hours.
But survival on a surface is not the same as the ability to cause infection. Gonorrhea needs direct contact with a mucous membrane (the lining inside the genitals, rectum, mouth, or eyes) and typically requires a meaningful amount of bacteria to establish an infection. Simply sitting on a toilet seat or sharing a towel doesn’t create the kind of direct mucosal contact the bacteria need. You cannot get gonorrhea from hugging, holding hands, sharing food, coughing, or sneezing.
Having It Once Doesn’t Protect You
Unlike some infections that trigger lasting immunity after you recover, gonorrhea does not. Your immune system does not build a reliable defense against the bacteria after a previous infection. Reinfection is common, and each new exposure carries the same risk as the first. This means that even if you’ve been successfully treated in the past, unprotected sex with an infected partner can give you gonorrhea again.
This lack of natural immunity also means there is currently no vaccine. The most effective way to reduce your risk is consistent condom use during vaginal, anal, and oral sex. Regular STI screening, particularly if you have new or multiple partners, catches asymptomatic infections before they’re passed on. If you’re diagnosed, any recent sexual partners should be notified so they can be tested and treated too, breaking the chain of transmission.
U.S. Trends in Gonorrhea Cases
Gonorrhea cases in the United States have been declining after years of increases. In 2024, reported cases dropped 10% compared to 2023, marking the third consecutive year of decline. The total stood at 543,409 reported cases. While this downward trend is encouraging, the numbers remain high, and gonorrhea continues to be the second most commonly reported bacterial STI in the country after chlamydia.