The natural history of C. trachomatis urethral infections in men who have sex with women

S
Stephen Jordan

Primary Investigator

Recruiting
18 years - 100 years
Male
Phase N/A
300 participants needed
1 Location

Brief description of study

What is the purpose of this study?

Chlamydia is the most common bacterial sexually transmitted infection (STI) in the United States and is caused by the bacteria Chlamydia trachomatis, or “CT” for short. CT infects both men and women. The purpose of this study is to understand what causes some men to resist CT infection, spontaneously clear CT, and some to resist antibiotic cure so we can design a vaccine and lower CT rates in both men and women. 

We will compare samples that we collect from men who are being treated for Chlamydia to healthy samples to further study sexually-transmitted co-infections and the immune system.

Who can take part?

We are currently looking for healthy adult males (ages 18 and older) to participate.

Detailed description of study

What Happens During Study Participation

  • Study participation consists of one clinic visit that will last approximately 30 minutes.
  • The study visit will take place in the Bell Flower Clinic (BFC) in Indianapolis, IN or the IU Infectious Diseases Research area of the 5th 3rd Building, which is just down the hall from the BFC.
  • The study visit will involve questions about medical/health history, a physical examination and collection of blood, swabs, urine and saliva.

Incentive/Compensation

  • Participants will receive a gift card of up to $100 for completing the study visit.

Eligibility of study

You may be eligible for this study if you meet the following criteria:

  • Conditions: Healthy
  • Age: 18 years - 100 years
  • Gender: Male

Inclusion Criteria:

  • Cisgender men
  • Healthy
  • Self-identify as heterosexual

Exclusion Criteria:

  • Urogenital symptoms
  • History of an STI  

     

Updated on 22 May 2025. Study ID: INFD-IIR-NIAID-CT, 19635

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