A woman has been treated three times for trichomoniasis, and each time the symptoms disappear for a couple of weeks and then return. She indicates that she has been in a monogamous relationship and that her partner has experienced no symptoms. Which of the following is the most likely explanation for her repeated infections?
A. The woman has been misdiagnosed and has a yeast infection which will need a different antimicrobial.
B. The woman is allergic to the prescribed antimicrobials.
C. Her partner has an asymptomatic infection and keeps re-infecting her.
D. The Trichomonas has become resistant to the antimicrobial that was prescribed.
Answer: C
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