Open consultation: National Chlamydia Screening Programme policy update

Public Health England

January 15
00:00 2020

Chlamydia is the most common bacterial sexually transmitted infection, with sexually active young people at highest risk. As chlamydia often has no symptoms and can have serious health consequences (such as pelvic inflammatory disease, ectopic pregnancy and tubul factor infertility) opportunistic screening remains an essential element of good quality sexual health services for young adults.

Further information on chlamydia is available from NHS.UK.


National chlamydia screening programme (NCSP)

HIV / STI department, Public Health England
61 Colindale Avenue


Programme overview

A substantial proportion of all young adults become infected with chlamydia in a year. The aim of the National Chlamydia Screening Programme (NCSP) is to control chlamydia through early detection and treatment of asymptomatic infection, so reducing onward transmission and the consequences of untreated infection.

  1. NCSP: programme overview
  2. Chlamydia screening: evidence summary and briefing
  3. NCSP: re-testing of positive chlamydia cases report


Public Health England (PHE) collects data on all chlamydia tests undertaken in England from NHS laboratories, local authorities and NHS commissioned laboratories, to measure screening activity.

Chlamydia activity data reported by PHE are based on primary care and community service chlamydia data from CTAD Chlamydia Surveillance System, and chlamydia data from GUMCAD STI Surveillance System.

Sexual and Reproductive Health Profiles

Public Health Outcome Framework data tool

Chlamydia diagnosis rate indicator: summary of revised rate (June 2013)

Annual chlamydia diagnosis rate: frequently asked questions

PHE: protection of personal information and data

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