Can friends and trusted messengers boost COVID testing in hard-to-reach groups?

NCT ID NCT04873401

First seen May 07, 2026 · Last updated May 09, 2026 · Updated 1 time

Summary

This study tested two methods to increase COVID-19 testing among people who use opioids or other substances. One method used chain referrals (participants recruit their friends), the other used credible messengers (trusted community members). The goal was to see which approach got more people tested. The study involved 498 adults in New York City.

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Contacts and locations

Locations

  • New York State Psychiatric Institute

    New York, New York, 10032, United States

Conditions

Explore the condition pages connected to this study.