# primary syphilis

> syphilis that is the first stage of syphilis, marked by the development of a chancre, which is characterized by mononuclear leukocytic infiltration, macrophages, and lymphocytes

**Wikidata**: [Q18556215](https://www.wikidata.org/wiki/Q18556215)  
**Source**: https://4ort.xyz/entity/primary-syphilis


## References

1. Monarch Disease Ontology release 2018-06-29
2. Disease Ontology
3. [Identifiers.org](http://www.ebi.ac.uk/miriam/main/collections/MIR:00000233)