Despite recommendations that sexually active women 25 and younger be screened annually for chlamydia, less than half are tested that frequently, according to estimates from the Centers for Disease Control and Prevention.

A common sexually transmitted bacterial infection more than doubles the risk of HIV infection in African women, according to a study by researchers at RTI International.

The…

As men in a region of Uganda have adopted medical circumcision, the population level incidence in HIV dropped markedly, a researcher said here.

The finding comes from the region of Rakai,…

African men who underwent circumcision not only reduced their risk of contracting HIV infection, they also were significantly less likely to be infected with herpes simplex virus-2 (HSV-2) – also…

An international randomized clinical trial has shown that the vaccine Gardasil, which arms the immune system against four strains of the human papillomavirus (HPV), can reduce the incidence of anogenital…

Preventing sexually transmitted HPV infections may reduce a man’s risk of developing cancer of the penis. A worldwide review of studies has found that one of the most common types of…

The number of Americans newly infected with syphilis has fallen for the first time in a decade, but sexually transmitted diseases continue to take a staggering toll on the…

HIV infection is commonly associated with other sexual infections, such as herpes simplex virus (HSV). Infection with HSV facilitates the risk of HIV infection and negatively impacts…

Close to half of U.S. girls ages 13 and 17 have gotten at least one dose of the vaccine against human papillomavirus (HPV), but there is still a way to go…

Pediatricians in Appalachia are less likely than doctors in other areas to encourage parents to have their children receive the human papillomavirus (HPV) vaccine, according to a new…

Women at risk for chlamydia infections are more likely to get tested if they can do it at home instead of going to a clinic, suggests new research.

The study…

Alaska has the nation’s highest rate of Chlamydia and second-highest rate of gonorrhea as the sexually transmitted diseases spread in rural areas, according to the Alaska Division of Public Health.

Young black men who have sex with men (MSM) get infected with HIV nearly five times more often than MSM from other races, even…

Health officials say hundreds of people may have been told they have syphilis when they don’t.

The Centers for Disease Control and Prevention says a study of five…

A new study from the Indiana University School of Medicine and the Regenstrief Institute has found that Black and especially Hispanic young women are…

Researchers have documented yet another health benefit for circumcision, which can protect men against the AIDS virus, saying it can protect their wives and girlfriends from a virus that causes…

Among gay men in the United States, blacks are more likely than whites to believe that homosexuality is “wrong” - and these feelings might be contributing to the black…

The United States apologized on Friday for an experiment conducted in the 1940s in which U.S. government medical researchers deliberately infected Guatemalan prison inmates with syphilis.

Secretary of State Hillary Clinton,…

Risky sexual behavior among members of a subset of the gay community is still adding to the spread of HIV. Research published in the open access journal…

More than 4 million new HIV infections could be prevented in eastern and southern Africa by 2025 if male circumcision rates were increased to 80 percent, researchers said…

Men who use condoms every time they have sex are less likely to harbor the virus that causes genital warts than those who are less consistent about protection, a…

A new study examining the relationship dynamics of gay male couples finds that couples make “sexual agreements” - rules about whether sex with outside partners is allowed…

Physicians who prescribe erectile dysfunction drugs for their male patients should be sure to discuss the importance of safer sex practices, even with older patients: that…

Scientists studying swingers - straight couples who regularly swap sexual partners and indulge in group sex at organized meeting - say they have higher rates of sexually transmitted infections (STIs)…

The risk of acquiring HIV through unprotected anal sex is at least 20 times greater than with unprotected vaginal sex and increases if other infections…