Tag Archives: Listerine

STD Awareness: Can I Get Gonorrhea from Kissing?

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Not all types of kissing feature the exchange of saliva.

Some pretty depressing news hit a couple of months ago, when headlines proclaimed kissing could allow gonorrhea to jump from one person to another.

We already knew gonorrhea could be transmitted during oral sex — a terrible fact, given that most people don’t use condoms or dental dams during oral sex. And we knew that oral gonorrhea is more likely to develop drug resistance, which could be helping to drive the possibly untreatable gonorrhea of the near future.

Mouth-to-mouth kissing could be transmitting gonorrhea right under our noses — literally.

Gonorrhea is most famous as an infection of the cervix or the urethra. But the bacteria that cause gonorrhea can thrive in other warm, moist areas of your body — not just the reproductive tract, but also in the mouth, throat, eyes, and anus. Unprotected oral sex can allow those bacteria to travel in either direction between one person’s genitals and another person’s throat.

But what about mouth-to-mouth kissing, like French kissing? Is that enough to allow these bacteria to hitch a ride from one mouth to another? Previous research, using a mathematical model, estimated that mouth-to-mouth contact might be a significant — and underappreciated — mode of gonorrhea transmission. But that was a mathematical model, a sophisticated equation using what we know about a population’s gonorrhea prevalence and sexual behavior to estimate how frequently the infection is transmitted from one mouth to another. Continue reading →

STD Awareness: Is Mouthwash a Match for Gonorrhea’s Superpowers?

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Since the 1930s, we’ve enjoyed around eight decades of easily cured gonorrhea — at least in places with easy access to antibiotics — but experts fear those days are numbered. In the past year or so, cases of untreatable gonorrhea have occasionally made headlines.

Thanks to the powers of evolution, some bacteria have acquired the multiple genes necessary to withstand the onslaught of the pills and shots administered by doctors. Gonococci, the bacteria that cause gonorrhea, are starting to win this “arms race” with humans, whose antibiotic arsenals are losing effectiveness. And with gonorrhea on the rise, gonococci may be evolving at an ever-quickening clip.

In 1879, Listerine claimed to cure gonorrhea. Today, scientists are finally testing that claim. We await the results.

Oral Gonorrhea: The Silent Scourge

Many experts believe oral gonorrhea is a key driver of antibiotic resistance. These infections usually don’t cause symptoms, and without symptoms people usually don’t seek treatment. Without treatment, gonococci can hang out in a throat for up to three months.

After transmission by oral sex — and possibly even by kissing  — gonococci can set up camp in the throat, which is an ideal environment for acquiring antibiotic resistance. They might not be causing symptoms, but they’re not sitting there twiddling their thumbs, either. If there’s one thing gonococci love to do, it’s collecting genes like some of us collect trading cards, and the throat is a gathering place for closely related bacteria species that hand out antibiotic-resistance genes for their expanding collections.

Gonococci can easily scavenge DNA from their surroundings — say, from a dead bacterium — and patch long segments of these genes into their own DNA, creating genetic hybrids between themselves and other organisms. Last month, scientists from Indiana University caught this phenomenon on video for the first time.

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