CHALO! 2.0: A Mobile Technology Based Intervention to Accelerate HIV Testing and Linkage to Preventive Treatment.

  • End date
    Dec 31, 2024
  • participants needed
  • sponsor
    Albert Einstein College of Medicine
Updated on 4 October 2022
Accepts healthy volunteers


While HIV prevalence among MSM in India is 10-15 times higher than in the general population (4.3% vs 0.3%), current interventions for Indian MSM have limited reach. In order to reduce the burden of HIV in MSM, innovative, far-reaching prevention and treatment strategies are needed. Guided by the increase access to internet-based social and mobile technologies (SMT) (e.g. SMS, WhatsApp, dating apps) globally and in India, this is a 3-arm parallel, pragmatic randomized controlled trial of community-developed, theory based behavioral intervention (CHALO! 2.0) delivered via WhatsApp (secure SMS application) compared to an Attention-Matched Control, or a Digital Coupon for free HIV testing only control conditions. The primary outcomes are HIV-testing at 6 months (3 months after the end of the intervention) and linkage-to-preventive care (counseling or pre-exposure prophylaxis) at 12 months. The secondary outcomes are the frequency of HIV-testing by 18 months.

Condition Hiv
Treatment CHALO! 2.0, Attention-matched control (AMC), Digital coupon only (DCO)
Clinical Study IdentifierNCT04814654
SponsorAlbert Einstein College of Medicine
Last Modified on4 October 2022


Yes No Not Sure

Inclusion Criteria

live or work in Mumbai or Thane
fluent in Hindi or English
have had anal sex with men in the past one year
report that they have either never been tested for HIV, are unaware of HIV test results, or are HIV-negative with last HIV test greater than or equal to six months ago, and have engaged in anal sex since last HIV test
able to provide and verify a WhatsApp mobile number and email address
willing to answer online surveys for 18 months

Exclusion Criteria

participating in a concurrent HIV-related study
intention to move out of the Mumbai metropolitan area in the next six months
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