Transmission reduction intervention project (TRIP)

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Transmission reduction intervention project (TRIP)

The Transmission Reduction Intervention Project (TRIP) is a study conducted by the Alliance for Public Health in collaboration with the New York-based National Development and Research Institutes (NDRI) in October 2013–December 2017

Overall goal: prevention of transmission of HIV from recently infected persons (‘seed’) infected with HIV during the last six months, to their drug and sexual partners, using a 2-step algorithm to trace social networks.

Project aspects:


Three groups of participants: main group (recently infected ‘seeds’ and their drug and sexual partners) and two comparison groups (‘seeds’ with long term infection and their partners, and non-infected ‘seeds’).


This study is being conducted in three cities: Athens (Greece), Chicago (USA) and Odessa (Ukraine).


Support: participants who are positive are referred to the CITI case manager project to start treatment and receive ART (if they are eligible). All participants are helped to receive counseling and necessary medical services.

Total number of participants (1 November 2015): 1,155, 42 of whom are recently infected people.