Abstract
Background: Social network approaches to testing allow individuals (indexes) to distribute tests to social networks (alters). This quasi-experimental study compared two social network-based testing strategies in promoting human immunodeficiency virus (HIV) testing among Chinese gay, bisexual, and other men who have sex with men (GBMSM). Methods: GBMSM aged ≥18 years were recruited from Guangzhou, China. From May to September 2019, indexes could distribute blood-based HIV/syphilis dual self-testing kits to people within their social network. Indexes recruited from October 2019 to January 2020 could send HIV testing cards to their social networks for free facility-based tests. Alters were encouraged to upload a photo verification of test results. Indexes and alters received incentives during both periods. Results: There were 245 participants who were assessed for eligibility and 208/245 (84.9%) were eligible. 106 and 102 indexes were recruited in the secondary distribution and testing card arms respectively. 154/208 (74.0%) completed follow up at 1 month. 92 indexes in the secondary distribution arm self-reported distributions to 179 unique alters, and 62 in the testing card arm to 26 unique alters. An average of 1.95 (standard deviation [s.d.] = 1.90) HIV/syphilis dual self-tests and 0.42 (s.d. = 0.78) HIV testing cards were distributed, generating a risk difference of 1.53 (95% confidence interval [CI] 1.09, 1.96). Indexes self-identifying as gay (P = 0.007) or having previously tested (P = 0.02) distributed more tests. Secondary distribution cost less per alter tested (USD120 vs USD9408). Conclusions: Secondary distribution engaged more GBMSM to distribute tests and reached more GBMSM to test compared to referral cards, suggesting advantage in facilitating testing uptake among Chinese GBMSM.
Original language | English |
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Pages (from-to) | 357–366 |
Number of pages | 10 |
Journal | Sexual Health |
Volume | 19 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2022 |
Keywords
- China
- HIV
- men who have sex with men
- secondary distribution
- self-testing
- social network
- syphilis
- testing uptake