Outcomes after Implementation of a Public Health Program for HIV Partner Notification in Edmonton, Canada
Methods: All individuals newly diagnosed with HIV in Edmonton, Canada were interviewed by a Partner Notification Nurse (PNN) for sexual, needle sharing and perinatal contacts. Data collected on partners included whether they were located, tested, and test results. A descriptive analysis was performed on data collected from April, 2010 to December, 2013.
There were 346 newly diagnosed HIV cases during this time period: 69.4%(n=240) were male with a median age of 37 years (IQR 29-46). The majority of male cases were Caucasian (n=134; 55.8%) with the primary mode of transmission being sex with men (MSM) (n=142; 59.2%). The majority of female cases were Black (n=48; 45.3%) and reported heterosexual transmission (n=80; 75.5%).
Seventy per cent (n=243) of HIV cases provided contact information. Cases reporting contacts were younger (35 years, IQR 28-44 vs. 41 years, IQR 33-51, p<0.001). Those who did not have sexual or IDU as the primary mode of transmission (e.g. vertical transmission) were less likely to report contacts (27.3% vs. 71.6%, p=0.004).
Information on 584 contacts was provided; the median number of contacts per case was 1 (IQR 1-3). The majority (92.6%; n=541) of contacts were exposed through sex, 5.5% (n=32) through needle sharing and 2.2% (n=13) perinatally. 15.6% (n=91) were previously HIV positive. Sixty nine per cent (n=404) were eligible by place of residence for follow up by local PNNs; 85.7% (n=347) of these contacts were located and of these, 88.2% (n=306) were tested resulting in 20 new cases of HIV. All new cases received HIV care; at baseline, 70% (n=14) had normal CD4 counts (>350 x109/L), 5 cases had CD4 counts 200-350 x109/L and 1 case was below 200 x109/L.
Of the previously positive contacts, 81.3% (n=74) were sero-positive prior to their exposure to the case. 18.7% (n=17) were sero-positive after their last exposure to the index case.
Conclusion: HIV partner notification efforts, conducted by PNNs, resulted in the majority of named contacts being located and tested, including the identification of 20 previously undiagnosed cases of HIV.
T. Pillay, None
S. Houston, None
S. Lemire, None
K. Paradis, None
T. Birse, None
R. Cooper, None
A. Singh, None