Which organism causes the highest number of sexually transmitted diseases each year?

Which organism causes the highest number of sexually transmitted diseases each year?
 
  A) Neisseria gonorrhoeae
  B) Treponema pallidum
  C) Chlamydia trachomatis
  D) Trichomonas vaginalis

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A positive tuberculin test means a patient
 
  A) has active disease.
  B) has been previously exposed to Mycobacterium tuberculosis.
  C) has a current inappropriate infection.
  D) has active disease, has been previously exposed to Mycobacterium tuberculosis, or has a current inappropriate infection.

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Infectious hepatitis is caused by infection with hepatitis ________ virus.
 
  A) A
  B) B
  C) C
  D) E

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Hepatitis B and C are transmitted via the
 
  A) oral route.
  B) parenteral route.
  C) dermal route.
  D) ophthalmic route.

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Which disease test will show a false positive when immunized with the BCG attenuated virus?
 
  A) tuberculosis
  B) whooping cough
  C) diphtheria
  D) pneumococcal pneumonia