The following is a sexually transmitted infection that can cause pharyngitis and cervical lymphadenopathy with oral sex:
A. Hemolytic streptococcus
B. Chlamydia trachomatis
C. Epstein-Barr virus
D. Cytomegalovirus
ANS: B
Gonococcus or Chlamydia trachomatis are sexually transmitted infections that can cause pharyngitis and lymphadenopathy. Epstein-Barr virus causes infectious mononucleosis, which is not regarded as a sexually transmitted infection. Strep throat is pharyngitis caused by group A beta hemolytic streptococcus. Streptococcal pharyngitis is not a sexually transmitted infection.
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