The number of female students who have had a sexually transmitted disease has also doubled, the survey shows. Condoms are furthermore not as commonly used today with a new partner as they were a decade ago, according to a report in the local Upsala Nya Tidning daily.
“The development is worrying. To be able to break the trend of an increasing number of young women being infected by some sexually transmitted disease, more must demand that their partners use a condom,” said Tanja Tydén, a professor in health sciences at Uppsala University, to the newspaper.
The survey is carried out at five year intervals among female students who have visited Studenhälsan, the student health service at Uppsala University.
The survey shows that in 2009 female students had had an average of 11 sexual partners, more than double as many in comparison to those visiting the health clinic ten years before.
Over the same period the proportion who used a condom with a new sex partner had declined from 60 to 49 percent.
In 2009 almost a third of students had had chlamydia, genital warts or some other sexually transmitted disease, double the number of a decade ago.
The study has been published in the Acta Obsetrica et Gynecologica Scandinavica journal.