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Chlamydia Trachomatis

Chlamydia trachomatis is one of the most common bacterial sexually transmitted infections worldwide. It spreads through unprotected vaginal, anal, or oral sex and can affect anyone who is sexually active. Reported rates have been rising steadily, partly because testing has become more accessible.

Vibramycin

Doxycycline

100mg

Doxycycline 100mg capsules and tablets, used for acne vulgaris, chlamydia, Lyme disease and respiratory tract infection. A broad-spectrum tetracycline.

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Key points

  • Most people carrying this infection have no symptoms, which is why routine screening catches many cases that would otherwise be missed.
  • A week-long course of doxycycline, taken twice daily, clears the infection reliably in most cases.
  • Untreated cases carry a risk of pelvic inflammatory disease, epididymitis and fertility difficulties, which is why sexual partners need treatment too.

Why it often goes unnoticed

Most people with chlamydia trachomatis have no symptoms at all. When symptoms do appear, they tend to be mild: unusual discharge, a burning sensation when urinating, or pelvic discomfort. In men, the urethra is most commonly affected; in women, the cervix. Because symptoms are easy to miss, routine sexual-health screening is the most reliable way to catch it early.

Antibiotic treatment

Chlamydia trachomatis clears reliably with a short course of antibiotics. Doxycycline is a first-choice treatment, typically taken twice daily for seven days. Sex partners should also be treated to prevent reinfection. Left untreated, chlamydia can cause pelvic inflammatory disease, epididymitis, or fertility problems, so early treatment matters.

Further reading