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P77 Undiagnosed HIV: can at risk groups be identified for a new testing strategy?
  1. Nicola Lungu1,
  2. Sheila Morris2,
  3. Linda Panton2,
  4. Gordon Scott3
  1. 1Western General Hospital, Edinburgh, UK
  2. 2Regional Infectious Diseases Unit, Edinburgh, UK
  3. 3Lothian Sexual Health, Edinburgh, UK

Abstract

Background/introduction Public Health England report (Nov 2014) the number of HIV tests is increasing, number of positive diagnoses decreasing, but proportion undiagnosed HIV unchanged. We aimed to suggest new local strategy. Demographically identifying late diagnoses (CD4 <350 cells/mm3) would find groups within the population more likely to be diagnosed late. Testing that group could uncover undiagnosed early HIV.

Methods Data gathered about HIV diagnosed in our city Jan 2009–Dec 2014: age, gender, ethnicity, orientation, previous test, indication, place tested. Chi-Square compared early/late diagnoses. Under-served compared to well-served demographics.

Results 251 new diagnoses in 5 years. 125 early, 126 late. Disproportionate late diagnoses:

  • females (p = 0.023) without previous test (p = 0.006)

  • HSM (heterosexual males) (p = 0.068) without previous test (p = 0.004)

No significant difference between early/late diagnosis:

  • ethnicity: Caucasian, sub-Saharan African, other (p = 0.103)

  • age: <50 vs >50 (p = 0.74)

  • bisexual males (p = 0.87)

Disproportionate early diagnoses:

  • MSM males (p = 0.032) with previous test (p = 0.052)

Abstract P77 Table 1

HIV testing

Discussion/conclusion Barriers to earlier self-presentation of females and HSM should be examined. MSM benefit from specialised clinics yet are <50% diagnoses. Likely public and clinician unawareness of risk excludes earlier testing.

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