Sexual risk behavior of travelers who consulted a pretravel clinic.

Objective: The objective of this study was to determine to which degree travelers who received pretravel advice at a travel clinic have protected or unprotected sexual contact with a new partner and what factors influence this behavior.

Method: An anonymous questionnaire was sent to travelers who came to a pretravel clinic between June 1 and August 31, 2005. Risk factors for casual travel sex and predictors of protected sex were studied in a multivariate model.

Two cases of Klinefelter's syndrome diagnosed at a sexually transmitted infection clinic.

Klinefelter's syndrome is an important genetic cause of infertility in males. Two cases are described, which were picked up at the sexually transmitted infection (STI) clinic because of the finding of unusually small testes. Physicians at STI clinics are uniquely placed to detect this condition as they examine the genitalia of thousands of healthy young men each year as part of a sexual health check up.

Molecular epidemiology of Neisseria gonorrhoeae in Amsterdam, The Netherlands, shows distinct heterosexual and homosexual networks.

Molecular typing, added to epidemiological data, can better identify transmission patterns of gonorrhea in Western countries, where the incidence has recently been rising. From September 2002 to September 2003, patients with a laboratory-confirmed diagnosis of gonorrhea at the Clinic for Sexually Transmitted Infections in Amsterdam, The Netherlands, were subjected to a questionnaire pertaining to sexual risk behavior and sexual partners in the 6 months prior to the diagnosis. The Neisseria gonorrhoeae isolates were all genotyped using PCR-restriction fragment length polymorphism of the porin and opacity genes.