Yaws: Case Class, Reading the Test, and Azithromycin Dose (WHO)

Reads the yaws rapid and DPP tests, gives the WHO case class, and the azithromycin dose: 30 mg/kg once (maximum 2 g) or the age band, never under 6 months, with benzathine penicillin as the fallback.

Open the tool → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.

Example

Age in years
8
Weight in kg
25
Lives or lived where yaws is or was endemic
Yes
Yaws-like skin lesion
Yes
Rapid test: control line visible
Yes
Rapid test: treponemal line visible
Yes

Result: Treponemal-positive case. Azithromycin 750 mg once by mouth (30 mg/kg). The age band would give 2 tablets of 500 mg.

The tool opens with these values already filled in. Replace them with your own.

What you enter

  • Age in years
  • Weight in kg (for 30 mg/kg)
  • Lives or lived where yaws is or was endemic
  • Yaws-like skin lesion
  • Rapid test: control line visible
  • Rapid test: treponemal line visible
  • DPP: control line visible
  • DPP: treponemal (T) line visible
The other 2 fields
  • DPP: non-treponemal line visible
  • PCR
How this is calculated

Citation

WHO. Eradication of yaws: surveillance, monitoring and evaluation manual. 2021, pp. viii-x. WHO. Eradication of yaws: a guide for programme managers. 2018, pp. 8-9. Read the source ↗

A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.

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Built by Clay Good. Source on GitHub.