The chances for being infected with HIV increase by increasing the number of partners, by practicing unprotected intercourse, and if the partners were more promiscuous, while having unprotected intercourse. All this data is hard to put in an equation, but it is good to know the conditions that determine the factors for getting infected with HIV when having unprotected intercourse.
An estimated 77,400 people were living with HIV in the UK at the end of 2007, of whom more than a quarter (28%) were unaware of their infection.
In 2008, there were at least 7,370 new diagnoses of HIV, contributing to a cumulative total of 102,333 reported by the end of 2008.
There have been 25,171 diagnoses of AIDS in the UK so far.