HIV testing in Denmark: a nominator-denominator study.

Area of Science:

• Epidemiology
• Public Health
• Virology

Background:

• Understanding HIV infection prevalence and trends is crucial for public health interventions.
• Demographic variables, risk factors, and testing motivations influence HIV surveillance.
• Voluntary HIV testing provides a valuable data source for monitoring the epidemic.

Purpose of the Study:

• To describe the prevalence and trends of human immunodeficiency virus (HIV) infection in Denmark.
• To identify demographic variables, risk factors, and reasons for seeking HIV testing.
• To evaluate the utility of anonymous questionnaires among individuals tested for HIV antibodies.

Main Methods:

• A self-administered anonymous questionnaire was distributed to individuals undergoing voluntary HIV antibody testing across the Danish health-care system.
• Data were collected in November 1987 and April 1988, with 2143 (55%) questionnaires returned.
• The study analyzed HIV prevalence, demographic data, reported risk behaviors, and testing history.

Main Results:

• Overall HIV prevalence was 1.2%, with significantly higher rates among homosexual and bisexual men (6% in November, 9% in April).
• Reported risk factors included homosexual behavior (16% of men), intravenous drug use (7%), and multiple heterosexual partners (60%).
• Approximately 50% of homosexual men and intravenous drug users had been tested previously, with some engaging in risk behaviors since their last test.

Conclusions:

• Studies involving anti-HIV tested individuals can offer detailed insights into HIV testing patterns and infection rate trends.
• This approach supplements traditional HIV surveillance methods by providing specific behavioral and demographic data.
• Findings highlight the importance of targeted HIV testing and prevention strategies for high-risk groups.