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BIO NMDCAT Sexually transmitted diseases
nmdcat.online July 16, 2026

A defining characteristic of the lesions associated with the secondary stage of syphilis is that they:

A. Are restricted strictly to the genital region
B. Only appear after a decade of infection
C. Contain high numbers of spirochetes and are highly infectious
✓
D. Are deep, destructive, non-infectious granulomas

📝 Explanation

The correct option is Contain high numbers of spirochetes and are highly infectious. Secondary syphilis is marked by systemic mucocutaneous lesions (rash, mucous patches) that are laden with Treponema pallidum, making this stage extremely contagious through contact.

📖 Additional Information

  • Are restricted strictly to the genital region
  • Only appear after a decade of infection
  • Contain high numbers of spirochetes and are highly infectious
  • Are deep, destructive, non-infectious granulomas

The correct option is Contain high numbers of spirochetes and are highly infectious. Secondary syphilis is marked by systemic mucocutaneous lesions (rash, mucous patches) that are laden with Treponema pallidum, making this stage extremely contagious through contact.

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