Worm Infection Intensity From an Egg Count (Kato-Katz and Urine Filtration, WHO)
Classes a worm egg count as light, moderate or heavy by WHO Table 5.1.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Parasite
- Roundworm (Ascaris lumbricoides), eggs per gram
- Eggs per gram of stool
- 6000
Result: Moderate-intensity infection: 6,000 eggs per gram (5,000 to 49,999).
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Parasite
- Eggs per gram of stool (or per 10 mL of urine for S. haematobium)
- S. haematobium: visible blood in the urine
How this is calculated
Citation
WHO. Helminth control in school-age children: a guide for managers of control programmes. 2nd ed. Geneva: WHO; 2011. Table 5.1 (p. 54), from WHO Technical Report Series 912 (2002). Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.