PMID- 1593654 OWN - NLM STAT- MEDLINE DCOM- 19920626 LR - 20190509 IS - 0027-8874 (Print) IS - 0027-8874 (Linking) VI - 84 IP - 11 DP - 1992 Jun 3 TI - Case-control study of factors associated with human T-cell leukemia virus type I infection in southern Miyazaki, Japan. PG - 867-72 AB - BACKGROUND: An unusual age- and sex-specific distribution and a remarkably restricted geographic seroprevalence characterize human T-cell leukemia virus type I (HTLV-I) infection. Although the transmission routes of HTLV-I are known, these seroepidemiologic features cannot be fully explained. PURPOSE: This study was designed to identify potential characteristics associated with HTLV-I infection in a highly endemic Japanese community. METHODS: We evaluated occupational, residential, dietary, and medical histories in a case-control study conducted in two neighboring villages in southeastern Miyazaki Prefecture. One hundred forty-four case subjects and 276 control subjects, frequency matched by age, sex, and village, were interviewed. Village-specific profiles of demographic determinants of HTLV-I seroprevalence were generated using multiple logistic regression. RESULTS: Although a different pattern of factors was found for each village, occupations of the subjects and their fathers were associated with HTLV-I infection in both communities--farming in village A and fishing and farming in village B. For village A, there was more than a twofold association both with residence in the township for 55 years or more and with living in a particular area within the village. In addition, case subjects were more likely to have a mother who was deceased (odds ratio = 1.7; 95% confidence interval = 0.96-2.9). CONCLUSIONS: HTLV-I infection is characterized by a high degree of microepidemicity in this population, with seroprevalence related to both sociologic and geographic determinants. Moreover, as carriers' mothers themselves have a higher probability of being HTLV-I positive, an increased mortality among those infected with the virus is suggested. FAU - Stuver, S O AU - Stuver SO AD - Department of Epidemiology, Harvard School of Public Health, Boston, MA 02115. FAU - Tachibana, N AU - Tachibana N FAU - Mueller, N AU - Mueller N LA - eng GR - 1 T32 ES07069/ES/NIEHS NIH HHS/United States GR - CA-38450/CA/NCI NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - J Natl Cancer Inst JT - Journal of the National Cancer Institute JID - 7503089 SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Case-Control Studies MH - Demography MH - Diet MH - Female MH - HTLV-I Infections/diagnosis/*epidemiology/etiology MH - Humans MH - Japan/epidemiology MH - Male MH - Middle Aged MH - Occupations MH - Prevalence MH - Regression Analysis MH - Rural Population MH - Serologic Tests EDAT- 1992/06/03 00:00 MHDA- 1992/06/03 00:01 CRDT- 1992/06/03 00:00 PHST- 1992/06/03 00:00 [pubmed] PHST- 1992/06/03 00:01 [medline] PHST- 1992/06/03 00:00 [entrez] AID - 10.1093/jnci/84.11.867 [doi] PST - ppublish SO - J Natl Cancer Inst. 1992 Jun 3;84(11):867-72. doi: 10.1093/jnci/84.11.867.