Table 2 Estimates of prevalent HIV infections among adults in the United Kingdom at the end of 2003.
| Exposure category | Number diagnosed* | Number undiagnosed† | Total |
|---|---|---|---|
| Sex between men | 18 100 | 6400 (26%) | 24 500 |
| Injecting drug use | |||
| Males and females | 1400 | 400 (22%) | 1800 |
| Heterosexuals | |||
| Male | 6700 | 4200 (39%) | 10 900 |
| African | 4100 | 2000 | 6100 |
| Non‐African | 2600 | 2200 | 4800 |
| Female | 11 800 | 3300 (22%) | 15 100 |
| African subtotal | 8700 | 1400 | 10 100 |
| Non‐African subtotal | 3100 | 1900 | 5000 |
| Total | 18 500 | 7500 (29%) | 26 000 |
| Blood products‡ | |||
| Males and females | 700 | 0 | 700 |
| Grand total | 38 700 | 14 300 (27%) | 53 000 |
*Numbers diagnosed were obtained from SOPHID and Health Protection, Scotland, adjusted for underreporting and failure to access services.
†Numbers undiagnosed for Northern Ireland derived by using exposure specific factors.
‡It was assumed that all cases infected through blood and blood products were diagnosed.