Chlamydia

Clear→ stable

Sexually transmitted

Current NYS Status

102,175 cases in 2024 — near the 5-year baseline of ~96,000.

2024 statewide cases: 102,175

Source: NYSDOH Annual Communicable Disease Report 2024 + 5-yr baseline

What is it?

Chlamydia is caused by Chlamydia trachomatis and is the most frequently reported infectious disease in New York State, with 102,175 cases in 2024. Because most infections cause no symptoms, routine screening is critical.

How it spreads

Spreads through vaginal, anal, or oral sex. Can infect the genitals, rectum, and throat. Can be passed from pregnant person to newborn during delivery, potentially causing eye infections or pneumonia.

Symptoms

Most people have no symptoms. When symptoms occur: unusual discharge, burning during urination, or pelvic pain. In women, untreated chlamydia can cause PID and damage to reproductive organs, potentially causing infertility.

Who is at risk?

Sexually active people, particularly those under 25. The CDC and NYSDOH recommend annual chlamydia testing for all sexually active women under 25 and older women with new or multiple partners.

What you can do

👁Get tested annually if you are a sexually active woman under 25 or have new/multiple partners

🛡Use condoms to reduce risk of transmission

⚕️If diagnosed, complete antibiotics and notify all recent sexual partners

Tier B — Annual report tracking

Based on NYSDOH annual communicable disease report. Threat level reflects 2024 case counts compared to the 5-year baseline.

Seasonality: year round

This information is for general public health awareness and is not a substitute for professional medical advice, diagnosis, or treatment.