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  • The spectrum of sexually transmitted infections (STIs) includes the classic venereal diseases—gonorrhea, syphilis, chancroid, lymphogranuloma venereum, and granuloma inguinale—as well as a variety of other pathogens known to be spread by sexual contact (Table 47-1). Selected clinical syndromes associated with STIs are listed in Table 47-2. The most current information on epidemiology, diagnosis, and treatment of STIs provided by the Centers for Disease Control and Prevention (CDC) can be found at

TABLE 47-1Sexually Transmitted Infections
TABLE 47-2Selected Syndromes Associated with Common Sexually Transmitted Pathogens


  • Neisseria gonorrhoeae is a gram-negative diplococcus estimated to cause almost 500,000 new infections per year in the United ...

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