Chlamydia Treatment Concerns: Risks of Re-Infection and Antibody Questions - Urology

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Treatment issues related to Mycoplasma infections?


Hello, doctor.
I was diagnosed with a Chlamydia infection at the beginning of the month and immediately started treatment.
After about a week, I tested negative.
However, my partner went for testing and was also found to have a Chlamydia infection.
When my partner consulted the doctor, they asked if it was safe to engage in sexual activity during treatment, and the doctor replied that it was okay as long as a condom was used throughout.

When my partner started their treatment, we had sexual intercourse on the first day while using a condom, but it broke during the process.
We immediately replaced it upon noticing the break.
I would like to ask: 1.
In the situation where we noticed the condom broke and immediately changed to a new one, is there still a risk of reinfection with Chlamydia? How likely is that? 2.
After completing treatment (and having sexual intercourse a week later), do I have antibodies against this bacteria? Thank you, doctor.
I apologize for the concern that prompted me to ask these questions.

123, 20~29 year old female. Ask Date: 2023/07/18

Dr. Du Shixi reply Urology


Hello: 1.
If I immediately change the condom after discovering it has broken, is there still a chance I could get reinfected with Chlamydia? Is the likelihood high? --> It is possible, but the chances are low.
2.
After just completing treatment (and engaging in sexual activity a week later), do I have antibodies against this bacteria? --> The accuracy of the testing instruments varies, so it is best to consult with the testing facility.
Wishing you good health.

Reply Date: 2023/07/18

More Info


Chlamydia trachomatis is a common sexually transmitted infection (STI) that can lead to serious health issues if left untreated. It’s great to hear that you were treated and tested negative after your initial infection. However, your concerns about re-infection and antibody presence are valid and important to address.

1. Risk of Re-Infection: In your situation, since you and your partner engaged in sexual activity while your partner was undergoing treatment, there is a risk of re-infection if the treatment was not fully effective or if the infection was not cleared completely. The fact that you used a condom is a positive step in reducing the risk of transmission; however, since the condom broke during intercourse, there is a possibility that you could have been exposed to the bacteria again. The likelihood of re-infection depends on several factors, including the timing of your partner's treatment and whether they were fully compliant with their medication regimen. If your partner was still infectious at the time of the condom break, there is a risk of transmission. It is advisable for both partners to complete their treatment and abstain from sexual activity until they have both been re-tested and confirmed negative for the infection.

2. Presence of Antibodies: After treatment for chlamydia, your body may develop antibodies against the bacteria. However, the presence of antibodies does not guarantee immunity against future infections. Chlamydia does not confer long-term immunity, meaning that even if you have antibodies, you can still get re-infected if exposed again. The antibodies typically develop within a few weeks after infection, but their presence is not a reliable indicator of current infection status. Therefore, it is crucial to follow up with your healthcare provider for testing after treatment, especially if you have concerns about potential re-exposure.

In summary, while using a condom significantly reduces the risk of STI transmission, a break in the condom during intercourse can lead to potential re-infection if your partner is still carrying the bacteria. It is essential to communicate openly with your partner about their treatment and to consider getting re-tested after a few weeks to ensure that both of you are free from the infection. Additionally, practicing safe sex consistently, including the use of condoms, is vital in preventing STIs in the future. If you have further concerns or symptoms, do not hesitate to reach out to your healthcare provider for personalized advice and support.

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