The White Plague Returns · Episode 11 of 12 · 20 min
The Phone Is Watching
Directly observed therapy moved from a nurse on a doorstep to a camera on a phone, and the episode asks what was gained and lost. It follows video pilots in Tacoma, San Diego and Tijuana, New York's trial, the London trial and the CDC and WHO acceptance, then India's pill-envelope phone-call system and four-country trials showing digital tools did not improve outcomes. It ends with the case that a phone check-in is surveillance.
Who's who
- Richard S. GarfeinUC San Diego epidemiologist who led the San Diego and Tijuana pilot
- Alistair StoryLondon outreach clinician and first author of the London video trial
- Joseph BurzynskiNew York TB control director and first author of the city's trial
- Beena ThomasResearcher who led evaluations of Ninety-Nine Dots accuracy in India
- Ramnath SubbaramanTufts researcher who led evaluations of Ninety-Nine Dots accuracy
- Degu Jerene+1 more episodeLead author of the four-country Ascent trial results
- Katherine Fielding+1 more episodeSenior epidemiologist on the Ascent trials
Where it happens
- Tacoma, WashingtonSite of a 2001 videophone observation pilot
- Tijuana, Mexico+1 more episodePart of the binational smartphone video pilot
- San Diego, California+2 more episodesPart of the binational smartphone video pilot
- London, England+7 more episodesSite of the trial finding video observation more often completed
- Chennai, IndiaBase of researchers who evaluated Ninety-Nine Dots
- Alaska+11 more episodesHas video guidelines limited by rural bandwidth
Timeline
- 2001A Tacoma practice pilots videophone observation; ninety-five percent of 304 doses were observed
- April 28, 2017WHO guidelines allow video to replace in-person observation where properly run
- February 21, 2019The London video trial is published in the Lancet
- March 24, 2023CDC recommends video observation be considered equivalent to in-person observation
- March 11, 2025Ascent trials published in the Lancet: digital tools did not reduce poor outcomes
Still debated
The trials show more doses observed and lower costs, but none showed a difference in cure. The certainty of the WHO's recommendation is graded weak to very low, and Ninety-Nine Dots studies measured pill-taking accuracy, not cure rates. Whether phone check-ins are surveillance or support is argued.