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Related Concept Videos

Sexually Transmitted Infections01:26

Sexually Transmitted Infections

Sexually transmitted infections (STIs) are diseases transmitted primarily through unsafe sexual interactions. Bacteria, viruses, or parasites cause them and can result in severe health complications if untreated.ChlamydiaThe bacterium Chlamydia trachomatis is responsible for the disease Chlamydia, the most common STI in the United States. This peculiar pathogen requires human cells to reproduce, residing intracellularly. The initial infection often goes unnoticed because it typically does not...
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A healthcare provider can diagnose a urinary tract infection (UTI) through several methods:Medical History and Symptoms: The provider will take a detailed medical history and ask about symptoms such as frequent urination, burning sensation during urination, and lower abdominal pain.Urinalysis: A clean-catch urine sample is collected in a sterile container and tested for the presence of bacteria, white blood cells (leukocytes), nitrites, blood, and protein. The presence of leukocytes and...
Bacterial Phylum Chlamydiae01:29

Bacterial Phylum Chlamydiae

The phylum Chlamydiae or Chlamydiota is composed of a single order, Chlamydiales. This phylum consists entirely of obligate intracellular parasites that infect eukaryotic hosts. While human pathogens within this group have been studied extensively, the phylum encompasses many species capable of interacting with various eukaryotic organisms. Members of Chlamydiae are typically small cocci, approximately 0.5 μm in diameter, and exhibit a distinctive developmental cycle. As is characteristic of...

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Related Experiment Video

Updated: May 18, 2026

Live-Cell Forward Genetic Approach to Identify and Isolate Developmental Mutants in Chlamydia trachomatis
10:32

Live-Cell Forward Genetic Approach to Identify and Isolate Developmental Mutants in Chlamydia trachomatis

Published on: June 10, 2020

Chlamydia screening, retesting and repeat diagnoses in Cornwall, UK 2003-2009.

Katy M E Turner1, Paddy J Horner, Lea Trela-Larsen

  • 1School of Social and Community Medicine, University of Bristol, Bristol, UK. katy.turner@bristol.ac.uk

Sexually Transmitted Infections
|October 2, 2012
PubMed
Summary
This summary is machine-generated.

Most individuals were tested once for chlamydia, but repeat testing increased over time. Maintaining repeat testing, especially for those previously diagnosed, is crucial for the National Chlamydia Screening Programme's sustainability.

Related Experiment Videos

Last Updated: May 18, 2026

Live-Cell Forward Genetic Approach to Identify and Isolate Developmental Mutants in Chlamydia trachomatis
10:32

Live-Cell Forward Genetic Approach to Identify and Isolate Developmental Mutants in Chlamydia trachomatis

Published on: June 10, 2020

Area of Science:

  • Public Health
  • Epidemiology
  • Infectious Disease Control

Background:

  • The National Chlamydia Screening Programme (NCSP) aims to reduce chlamydia prevalence.
  • Understanding testing and retesting patterns is vital for program effectiveness.

Purpose of the Study:

  • To describe chlamydia testing and retesting patterns in Cornwall over the first 5 years of the NCSP.
  • To identify factors associated with chlamydia retesting.
  • To estimate the incidence of chlamydia diagnosis and repeat diagnoses.

Main Methods:

  • Secondary analysis of chlamydia testing database in Cornwall (March 2003 - January 2009).
  • Included men and women aged 12-25 years at first test.
  • Cox regression used to analyze factors associated with retesting; incidence calculated.

Main Results:

  • 71,066 records from 49,941 individuals analyzed; 75.4% tested only once.
  • Female sex and initial positive diagnosis were associated with higher retesting rates.
  • Chlamydia positivity declined from 13.2% to 5.8%; repeat diagnosis incidence was 18.1 per 100 person-years in initially positive individuals.

Conclusions:

  • While most individuals were tested once, repeat testing increased towards the study's end.
  • Sustaining the screening program requires maintaining retesting rates, particularly for previously diagnosed individuals.
  • Future efforts should focus on continued screening and rescreening to ensure program sustainability.