Can You Get an STI From Kissing?
When people think about sexually transmitted infections (STIs), kissing might not be the first thing that comes to mind. Most of us associate STIs with other forms of intimate contact, but what about something as common as a kiss? You might be surprised by what you learn about how these infections can spread. Let’s take a closer look.
Some STIs Can Indeed Be Transmitted Through Kissing
According to Dr. Natalia Hapych, a certified family medicine physician, some sexually transmitted infections can actually be spread through kissing. Though many people are unaware of it, certain infections can be passed from one person to another when saliva is exchanged or when the mucous membranes come into contact during kissing.
The infections that are of particular concern here are those that can live in saliva, such as herpes simplex virus (HSV). This virus is perhaps one of the best-known STIs that can be transmitted by kissing, and it’s much more common than many people think.
Herpes Simplex Virus
Herpes simplex virus (HSV) comes in two types: HSV-1 and HSV-2. While both types can be transmitted through direct contact, HSV-1 is the type most commonly spread by kissing. It usually causes cold sores, which are small blisters that can appear around the lips or inside the mouth.
HSV-1 is often called oral herpes, but it’s important to understand that it is indeed an STI. The virus is highly contagious and can be transmitted even when an infected person doesn’t have visible sores. This means that someone can pass the virus on without even knowing they are infected.
In fact, Dr. Hapych explains that herpes is one of the most common infections worldwide, affecting millions of people. While it’s often not dangerous, it can cause uncomfortable symptoms and tends to recur throughout a person’s life once they’re infected. The virus remains in the body, lying dormant in nerve cells, until it’s reactivated by triggers like stress or illness.
Syphilis and Kissing
Another STI that might be transmitted by kissing, although much less commonly, is syphilis. Syphilis is a bacterial infection caused by Treponema pallidum. If an infected person has a syphilitic sore—called a chancre—in or around the mouth, the bacteria can be transmitted through kissing. These sores are usually painless, so the person may not even realize they are present.
Syphilis is generally spread through sexual contact, but according to Dr. Hapych, there is a small possibility of transmission through deep kissing if there are open sores present. While the risk is relatively low, it’s still important to understand that it’s not impossible.
Cytomegalovirus
Cytomegalovirus (CMV) is another infection that can be spread through saliva. While CMV is not exclusively an STI, it can be transmitted through intimate activities, including kissing. For most healthy people, CMV might not cause noticeable symptoms, but for those with weakened immune systems, it can lead to more serious health issues.
Dr. Hapych notes that CMV is part of the herpesvirus family, and once infected, the virus remains in your body for life. Although it doesn’t always lead to symptoms, it’s something to keep in mind, particularly for those who are immunocompromised or pregnant, as CMV can pose risks to unborn babies.
Mononucleosis
Although it’s not technically considered an STI, infectious mononucleosis (often called “mono” or the “kissing disease“) is another condition that can spread through kissing. Mononucleosis is caused by the Epstein-Barr virus (EBV), which is also part of the herpesvirus family.
Dr. Hapych explains that mono is spread mainly through saliva, making kissing one of the easiest ways for the infection to spread. Symptoms of mono include fatigue, fever, sore throat, and swollen lymph nodes, and it can take weeks or even months to fully recover. Though not classified as an STI, mono serves as a reminder of how infections can spread through simple activities like kissing.
The Importance of Understanding STI Transmission
STIs can be tricky to understand, as they can spread in different ways—some through bodily fluids, others through skin-to-skin contact. Kissing is a form of intimacy that often feels harmless, but as Dr. Hapych points out, it’s important to be aware that it can indeed lead to the transmission of certain infections.
To protect yourself, it’s essential to be mindful of visible sores or symptoms on yourself or your partner. Cold sores, for example, are a clear indication that HSV-1 may be present, and avoiding kissing during an active outbreak can reduce the risk of transmission. Practicing good oral hygiene and maintaining open communication with partners are also crucial steps toward preventing the spread of infections.
Should You Worry About Getting an STI From Kissing?
While the idea of getting an STI from kissing might sound alarming, it’s important to keep things in perspective. The risk of contracting an STI from kissing is generally lower than the risk associated with other forms of sexual activity. However, as Dr. Hapych highlights, it’s still a real possibility, particularly with infections like HSV-1.
If you or your partner has a history of cold sores or other symptoms, it’s wise to take precautions. Avoiding kissing during an outbreak, being aware of any sores, and discussing your health openly with your partner are all effective ways to reduce the risk.
Prevention Tips for Staying Safe
To reduce the risk of contracting an STI from kissing, Dr. Hapych recommends the following steps:
- Avoid kissing if sores are present: If you or your partner have visible sores or symptoms, it’s best to avoid intimate contact until they have healed.
- Practice good oral hygiene: Keeping your mouth clean and healthy can help prevent infections and reduce the likelihood of spreading bacteria or viruses.
- Communicate with your partner: Honest communication is key. Talk to your partner about any symptoms or past infections so you can make informed decisions together.
- Get regular health check-ups: Regular visits to your physician can help catch any infections early and provide you with the information you need to protect yourself and your partners.
The Bottom Line
Kissing is a common and natural way to show affection, but it’s important to remember that some STIs can be transmitted this way. Herpes simplex virus (HSV-1) is the most well-known STI that can be spread through kissing, but other infections, like syphilis and cytomegalovirus (CMV), are also possibilities, though less common.
Dr. Hapych advises that while the risk of getting an STI from kissing is generally low, it’s not zero. Being mindful of symptoms, communicating with your partner, and taking precautions can help you enjoy intimacy safely and reduce the risk of spreading infections.
If you have any concerns about STIs or notice any unusual symptoms, it’s always a good idea to consult with your physician. They can provide guidance, answer your questions, and help ensure that you stay healthy while maintaining your relationships.
