Simple change could save thousands from TB: study tests 'Opt-Out' approach

NCT ID NCT04466488

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested a simple way to get more HIV patients in South Africa the medicine that prevents tuberculosis (TB). Instead of doctors having to choose to prescribe it, the new approach made TB prevention the standard option, requiring doctors to actively opt out if they didn't want to give it. Over 50,000 adults from public clinics took part to see if this 'choice architecture' could boost the number of people getting life-saving TB prevention.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Perinatal HIV Research Unit

    Soweto, Gauteng, 1864, South Africa

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