Kato-Katz thick smear
E534577
parasitological diagnostic technique
quantitative helminth egg count method
stool examination method
Kato-Katz thick smear is a parasitological stool examination technique widely used to quantify helminth eggs, especially for diagnosing intestinal schistosomiasis and soil-transmitted helminth infections.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Kato-Katz thick smear canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5516483 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Kato-Katz thick smear Context triple: [Schistosoma mansoni, diagnosticMethod, Kato-Katz thick smear]
-
A.
Necator americanus
Necator americanus is a parasitic hookworm species that infects humans, primarily in tropical and subtropical regions, causing iron-deficiency anemia and other health problems.
-
B.
Brugia malayi
Brugia malayi is a parasitic roundworm that infects humans and causes lymphatic filariasis, a tropical disease characterized by swelling and damage to the lymphatic system.
-
C.
Ascaris lumbricoides
Ascaris lumbricoides is a large parasitic roundworm that infects the human intestine and is a common cause of ascariasis worldwide.
-
D.
Schistosoma mansoni
Schistosoma mansoni is a parasitic blood fluke that infects humans and causes intestinal schistosomiasis, a significant neglected tropical disease.
-
E.
Necator
Necator is a genus of parasitic hookworms that infect the small intestines of humans and other mammals, commonly causing anemia and other health issues.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Kato-Katz thick smear Target entity description: Kato-Katz thick smear is a parasitological stool examination technique widely used to quantify helminth eggs, especially for diagnosing intestinal schistosomiasis and soil-transmitted helminth infections.
-
A.
Necator americanus
Necator americanus is a parasitic hookworm species that infects humans, primarily in tropical and subtropical regions, causing iron-deficiency anemia and other health problems.
-
B.
Brugia malayi
Brugia malayi is a parasitic roundworm that infects humans and causes lymphatic filariasis, a tropical disease characterized by swelling and damage to the lymphatic system.
-
C.
Ascaris lumbricoides
Ascaris lumbricoides is a large parasitic roundworm that infects the human intestine and is a common cause of ascariasis worldwide.
-
D.
Schistosoma mansoni
Schistosoma mansoni is a parasitic blood fluke that infects humans and causes intestinal schistosomiasis, a significant neglected tropical disease.
-
E.
Necator
Necator is a genus of parasitic hookworms that infect the small intestines of humans and other mammals, commonly causing anemia and other health issues.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
parasitological diagnostic technique
ⓘ
quantitative helminth egg count method ⓘ stool examination method ⓘ |
| appliesTo |
animal stool samples
ⓘ
human stool samples ⓘ |
| basedOn | microscopic examination of stool ⓘ |
| comparedWith |
FLOTAC technique
NERFINISHED
ⓘ
Koga agar plate method ⓘ formol-ether concentration technique ⓘ |
| dataTypeProduced |
infection intensity categories
ⓘ
quantitative egg counts ⓘ |
| detects |
Ascaris lumbricoides eggs
ⓘ
Schistosoma japonicum eggs ⓘ Schistosoma mansoni eggs ⓘ Trichuris trichiura eggs ⓘ hookworm eggs ⓘ |
| developedBy |
K. Kato
NERFINISHED
ⓘ
M. Katz NERFINISHED ⓘ |
| hasFeature |
allows calculation of eggs per gram of stool
ⓘ
relatively low cost ⓘ simple to perform in field settings ⓘ standardized amount of stool examined ⓘ |
| hasLimitation |
hookworm eggs may clear rapidly after preparation
ⓘ
limited sensitivity for light Schistosoma infections ⓘ limited sensitivity for low-intensity soil-transmitted helminth infections ⓘ reduced sensitivity in low-intensity infections ⓘ requires fresh stool samples ⓘ |
| measurementUnit | eggs per gram of stool ⓘ |
| preparationStep |
clearing stool before microscopic reading
ⓘ
covering stool with glycerol-soaked cellophane ⓘ filling template hole with sieved stool ⓘ removing template to leave standardized stool amount on slide ⓘ sieving stool to remove large particles ⓘ |
| readingTime |
typically 30 minutes after preparation for Schistosoma eggs
ⓘ
within 30–60 minutes for hookworm eggs ⓘ |
| recommendedBy |
World Health Organization for mapping schistosomiasis
ⓘ
World Health Organization for monitoring soil-transmitted helminths ⓘ |
| supports | classification of infection intensity according to WHO thresholds ⓘ |
| usedFor |
diagnosis of intestinal schistosomiasis
ⓘ
diagnosis of soil-transmitted helminth infections ⓘ epidemiological surveys of helminth infections ⓘ monitoring mass drug administration programs for helminths ⓘ quantification of helminth eggs in stool ⓘ |
| usedIn |
endemic areas of schistosomiasis
ⓘ
endemic areas of soil-transmitted helminthiasis ⓘ |
| usesMaterial |
cellophane strip
ⓘ
glycerol-malachite green solution ⓘ microscope glass slide ⓘ template with defined hole volume ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Kato-Katz thick smear Description of subject: Kato-Katz thick smear is a parasitological stool examination technique widely used to quantify helminth eggs, especially for diagnosing intestinal schistosomiasis and soil-transmitted helminth infections.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.