Concerns About Herpes Transmission After Kissing: What You Need to Know - Dermatology

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When it comes to concerns about herpes transmission after kissing, it's important to understand the nature of the herpes simplex virus (HSV), its transmission routes, and the implications of your testing results.

Herpes simplex virus is categorized into two types: HSV-1, which is commonly associated with oral herpes (cold sores), and HSV-2, which is typically linked to genital herpes. However, both types can cause infections in either location. Transmission occurs primarily through direct contact with an infected area, especially when sores are present.
In your case, your girlfriend mentioned having a cold sore, which is a manifestation of HSV-1. If she had an active outbreak at the time of kissing, there is a risk of transmission. However, if she has been treated and the sore has healed completely, the risk of transmission decreases significantly. It's worth noting that even when sores are not visible, the virus can still be shed asymptomatically, which means there is always some level of risk involved.

Regarding your test results, an IgG level of 1.29 indicates that you have been exposed to the virus at some point, as a value above 1.1 is generally considered positive for HSV-1. However, the interpretation of these results can be nuanced. The IgM test is often less reliable for diagnosing herpes infections, especially in the context of recent exposure, as it can yield false positives or be influenced by other factors. Your previous IgG levels of 0.2 suggest that you did not have a significant exposure to the virus at that time. The increase to 1.29 indicates a possible recent exposure or infection, but it does not definitively confirm that you are currently infected.

Given that your girlfriend's sore has healed, and if she is no longer experiencing symptoms, the likelihood of her transmitting the virus to you is lower. However, it is essential to have open communication with her about her health status and any potential risks. If you are still concerned about your exposure or the implications of your test results, it would be prudent to consult with a healthcare provider who can offer further testing or guidance.

In summary, while there is a risk of transmission if your girlfriend had an active herpes sore during kissing, the risk diminishes once the sore has healed. Your test results suggest prior exposure to HSV-1, but further evaluation may be necessary to clarify your current status. If you have ongoing concerns, consider discussing them with a healthcare professional who can provide personalized advice based on your specific situation.