in the period between 1991 and 1996, 26 352 serum samples from different risk groups and blood donors, were studied to know the seroprevalence of antibodies against the human t-lymphotropic virus type i (htlv-i), and also as a continuation of researches carried out between 1989 and 1990. the elisa davih-htlv-i system was used for the antibodies investigation, and as a certifying test, the western blot davih-blot htlv-i was used too, both from the cuban davih laboratories. the presence of anti htlv-i antibodies was confirmed in 10 persons, and in most of them the epidemiologic study could elucidate the probable way of contagion. the seropositivity index observed was of 0,037 %, and is low if compared with the seroprevalence rates reported for the caribbean area.
