Table 1.

Demographic and risk factor profile of the EU population

Cohort	Age, yr	Gender	Risk group	n	Last exposure, months	Number of exposures past 12 mo
A	37.5	Female	Unprotected vaginal intercourse	16	<1 to 72	0 to 60
B	29.4	Male	Unprotected recept. anal intercourse	16	<1 to 18	0 to 24
C	38.3	Mixed: 80% male 20% female	Unprotected sexual exposure	10	1 to 20	0 to 20
D	46.4	Mixed: 89% male 11% female	Unprotected sexual exposure†	18	<1 to 72	0 to 52
Total				60

Mean ages, gender breakdowns, HIV risk factors, as well as range of time since last exposure and number of exposures in the previous 12 months are shown for individuals in each cohort. n =number of individuals tested. See Materials and Methods for a further description of the cohorts. 

^†Two individuals within this group also reported sharing needles with an infected partner.