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Health Indicator Report of Chlamydia Rates

Chlamydia is the most common bacterial sexually transmitted disease. Even though symptoms of chlamydia are usually mild or absent, serious complications that cause irreversible damage, including infertility, can occur "silently" before a woman ever recognizes a problem(1). It is the leading preventable cause of infertility, and screening and treatment are the best means of preventing it.

Chlamydia Cases per 100,000 Population by County, New Mexico, 2017

Data Sources

  • Patient Reporting Investigating Surveillance Manager, Infectious Disease Bureau, New Mexico Department of Health
  • New Mexico Population Estimates: University of New Mexico, Geospatial and Population Studies (GPS) Program,
  • U.S. Data Source: Division of STD Prevention, National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention.

Data Interpretation Issues

Rates are partly a function of how much testing is done - the more you test, the more you find - which is why females have roughly three times the number of reported cases as males. Testing increased throughout the 1990s, and the number of new cases jumped in 2004 due to new nucleic acid amplitude testing (NAAT) technology which is much more sensitive than previous culture tests. NAAT has been the primary testing method to date.


Chlamydia cases reported in the state of New Mexico per 100,000 population.


Number of cases of chlamydia reported to the state of New Mexico (and Centers for Disease Control) in New Mexico residents from all health care providers.


Total Population

Other Objectives

Similar to HP2020 objectives STD-1: Reduce the proportion of adolescents and young adults with Chlamydia trachomatis infections and STD-2: Reduce Chlamydia rates among females aged 15 to 44 years. New Mexico Community Health Status Indicator (CHSI)

How Are We Doing?

Overall, chlamydia rates have been increasing from 2011 (547.0 per 100,000 population) to 2017 (645.1 per 100,000 population). In 2017, chlamydia rates were highest in the Black/African American race/ethnicity category (1097.8 per 100,000), second highest in the American Indian/Alaska Native population, (817.4 per 100,000 population), and third highest in the Hispanic category (497.9 per 100,000). The lowest rates were found in the White category (268.8 per 100,000 population) and Asian/Pacific Islander category (133.5 per 100,000) respectively. By county, the highest Chlamydia rate for 2017 was found in McKinley county (904.2 per 100,000), followed by Cibola County (898.4 per 100,000) and San Juan County (864.8 per 100,000). It is unknown whether this is an actual increase in rates or due to better testing and detection activities.

How Do We Compare With the U.S.?

Chlamydia rates in New Mexico have consistently ranked higher than U.S. rates from year 2011 to 2017. In 2017, New Mexico had the 4th highest Chlamydia rate in the U.S.

What Is Being Done?

Chlamydia testing is performed on females under age 26 at approximately 200 test sites including 54 public health offices and family planning and other provider agreement sites, in addition to routine treatment and surveillance activities.

Evidence-based Practices

Despite an a recommendation from the U.S Preventive Services Task Force to annually screen all sexually active females under age 25, data from health plans shows that fewer than 50% of that group actually gets screened each year. Chlamydia is the leading preventable cause of infertility, and screening and treatment are the best means of preventing it.
Page Content Updated On 11/05/2018, Published on 10/07/2019
The information provided above is from the New Mexico Department of Health's NM-IBIS web site ( The information published on this website may be reproduced without permission. Please use the following citation: "Retrieved Fri, 28 January 2022 from New Mexico Department of Health, Indicator-Based Information System for Public Health Web site:".

Content updated: Mon, 13 Jan 2020 09:38:59 MST