Context Transmission of sexually transmitted diseases (STDs) such as human
immunodeficiency virus (HIV) infection is associated with unprotected sex a
mong multiple anonymous sex partners. The role of the Internet in risk of S
TDs is not known.
Objective To compare risk of STD transmission for persons who seek sex part
ners on the Internet with risk for persons not seeking sex partners on the
Internet.
Design Cross-sectional survey conducted September 1999 through April 2000,
Setting and Participants A total of 856 clients of the Denver Public Health
HIV Counseling and Testing Site in Colorado.
Main Outcome Measures Self-report of logging on to the Internet with the in
tention of finding sex partners; having sex with partners who were original
ly contacted via the Internet; number of such partners and use of condoms w
ith them; and time since last sexual contact with Internet partners, linked
to HIV risk assessment and test records.
Results Of the 856 clients, most were white (77.8%), men (69.2%), heterosex
ual (65.3%), and aged 20 to 50 years (84.1%), Of those, 135 (15.8%) had sou
ght sex partners on the Internet, and 88 (65.2%) of these reported having s
ex with a partner initially met via the Internet, Of those with Internet pa
rtners, 34 (38.7%) had 4 or more such partners, with 62 (71.2%) of contacts
occurring within 6 months prior to the client's HIV test. Internet sex see
kers were more likely to be men (P<.001) and homosexual (P<.001) than those
not seeking sex via the Internet. Internet sex seekers reported more previ
ous STDs (P=.02); more partners (P<.001); more anal sex (P<.001); and more
sexual exposure to men (P<.001), men who have sex with men (P<.001), and pa
rtners known to be HIV positive (P<.001) than those not seeking sex via the
Internet,
Conclusions Seeking sex partners via the Internet was a relatively common p
ractice in this sample of persons seeking HIV testing and counseling (repre
sentative of neither Denver nor the overall US population). Clients who see
k sex using the Internet appear to be at greater risk for STDs than clients
who do not seek sex on the Internet.