Syphilis infection in the United States mainly occurs between sexually active adults aged from 20 to 29, with around 20,000 to 30,000 cases reported per year. <!-- Should we estimate how many cases go unreported? -->
Syphilis infection in the United States mainly occurs between sexually active adults aged from 20 to 29, with around 20,000 to 30,000 cases reported per year. <!-- Should we estimate how many cases go unreported? -->
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===Homosexuality and Syphilis==
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===Homosexuality and Syphilis===
The [[Centers for Disease Control and Prevention]] CDC stated the following regarding [[Homosexuality and Syphilis|homosexuality and syphilis]]:
The [[Centers for Disease Control and Prevention]] CDC stated the following regarding [[Homosexuality and Syphilis|homosexuality and syphilis]]:
{{cquote|"While surveillance data are not available by risk behavior, a separate CDC analysis suggests that approximately 64 percent of all adult P&S [[syphilis]] cases in 2004 were among men who have sex with men, up from an estimated 5 percent in 1999....Syphilis increases, especially among men who have sex with men, demonstrate the need to continually adapt our strategies to eliminate syphilis in the [[United States]],” said Dr. Ronald O. Valdiserri, acting director of CDC’s [[HIV]], [[STD]] and [[Tuberculosis|TB]] prevention programs."<ref>http://www.cdc.gov/od/oc/media/pressrel/r051108.htm</ref>}}
{{cquote|"While surveillance data are not available by risk behavior, a separate CDC analysis suggests that approximately 64 percent of all adult P&S [[syphilis]] cases in 2004 were among men who have sex with men, up from an estimated 5 percent in 1999....Syphilis increases, especially among men who have sex with men, demonstrate the need to continually adapt our strategies to eliminate syphilis in the [[United States]],” said Dr. Ronald O. Valdiserri, acting director of CDC’s [[HIV]], [[STD]] and [[Tuberculosis|TB]] prevention programs."<ref>http://www.cdc.gov/od/oc/media/pressrel/r051108.htm</ref>}}