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Albania is a Mediterranean, South–East European developing country where epidemiological data on infectious diseases are scarce. In this study, the seroprevalence of Helicobacter pylori infection in 1,088 Albanian healthy volunteers (472 females followed-up to a prenatal clinic, 173 recruits, 443 health care workers) was evaluated. Sera were tested for immunoglobulin-G (IgG) antibodies against H. pylori using a quantitative enzyme immunosorbent assay. The overall H. pylori seroprevalence was 70.7%. The H. pylori seroprevalence increased by age, from 60.4% in individuals younger than 20 years to 81% among those ‡ 50 years of age with a significant trend of increase by age. The overall seroprevalence was 73.9% for females and 59.5% for males. In addition the seroprevalence was 55.3% for people living in rural areas and 72.3% for people living in urban areas. No significant differences were found according to level of education except for individuals with elementary level of education. Nurses and hospital auxiliaries have significantly higher H. pylori seroprevalence when compared to other health care workers (physicians and office workers). When each variable (age, gender, area of residence, occupation, and education level) was adjusted for the confounding effect of the other variables by stepwise logistic analysis, we observed that age greater than 40 years and female gender remain the only variables independently associated with the presence of H. pylori IgG antibodies. H. pylori is highly prevalent among the Albanian population. Improving living conditions, education in hygiene, and the supply of running water are measures to prevent the transmission of H. pylori infection and other infections spread by the fecal–oral route in Albania. [ABSTRACT FROM AUTHOR]