The purpose of this study was to estimate the minimal magnitude of the
HIV problem among seafarers in Denmark. The material is based on case
records from the 6 medical departments in Denmark that undertake trea
tment of HIV patients. Retrospectively, all case records of HIV infect
ion among seafarers - and of their sexual contacts - have been identif
ied. 33 seafarers with HIV infection or AIDS were identified; 17 had n
o other known risk factor than heterosexual contacts in high-endemic a
reas. These results show that HIV infections have entered into the het
erosexual group of seafarers. HIV-infected seafarers are a risk group
for carrying HIV infection into the heterosexual population in non-end
emic areas. In 5 known cases, this has actually taken place in Denmark
. The majority of the heterosexually infected seafarers were probably
infected early in the AIDS era. We do not know if Danish seafarers are
still acquiring HIV abroad.