==Epidemiology==
*Syphilis in pregnancy > 350,000/year adverse birth outcome
*Cervical cancer due to HPV
*Infertility due to gonorrhea and chlamydia
*HIV, needless to say
*considerations
**no significant non-human reservoirs
**role of sexually active groups
**highlye dependent upon human behavior
<math>R_0 = B \times C \times D</math>
*<math>B</math>: transmission coefficient
*<math>C</math>: mean rate of partner change
*<math>D</math>: mean duration of infectiousness
==Diagnosis==
==Treatment==