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J Epidemiol Community Health. 1989 Mar; 43(1): 61–65.
PMCID: PMC1052792

Sexual behaviour of young people and the risk of HIV infection.


A survey of 16-21 year old people in Somerset was undertaken to find out about their sexual behaviour prior to mounting a local education campaign on AIDS. A representative sample of 400 people, using quota sampling in 40 randomly selected electoral wards, completed a schedule structured part self administered questionnaire. Of these, 371 (92%) considered themselves heterosexual. Nearly half (47%) of the 16 year olds had engaged in sexual intercourse, rising to 89% by the age of 21. Mean frequency of sexual intercourse among the sexually active is 62 per year. The frequency of partner change decreases with increasing age for non-virgins from 2.1 for 16 year olds to 1.5 partner changes per year for 21 year olds (mean frequency 1.7 per year, ie, a new partner every 7 months). This level of sexual activity could eventually give rise to HIV prevalence rates similar to those found in Africa, i.e., 15-100 HIV antibody positive per 1000.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.
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  • Moss AR. Epidemiology of AIDS in developed countries. Br Med Bull. 1988 Jan;44(1):56–67. [PubMed]
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