BIO NMDCAT Sexually transmitted diseases

nmdcat.online July 16, 2026

A neonate presents with Hutchinson’s teeth, interstitial keratitis, and eighth nerve deafness. This classic triad of symptoms is the result of vertical transmission of which pathogen during pregnancy?

A. Neisseria gonorrhoeae

B. Herpes simplex virus

C. Human immunodeficiency virus

D. Treponema pallidum

✓

📝 Explanation

The correct option is Treponema pallidum. This describes late congenital syphilis. T. pallidum can cross the placenta, infecting the fetus and causing severe developmental anomalies known as the Hutchinson's triad.

📖 Additional Information

Neisseria gonorrhoeae
Herpes simplex virus
Human immunodeficiency virus
Treponema pallidum

The correct option is Treponema pallidum. This describes late congenital syphilis. T. pallidum can cross the placenta, infecting the fetus and causing severe developmental anomalies known as the Hutchinson's triad.

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