AJTMH Transactions of the Royal Society of Tropical Medicine and Hygiene
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Am. J. Trop. Med. Hyg., 52(1), 1995, pp. 109-112
Copyright © 1995 by The American Society of Tropical Medicine and Hygiene

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The Risk of Helicobacter pylori Infection Among U.S. Military Personnel Deployed Outside the United States

Kenneth C. Hyams, David N. Taylor, Gregory C. Gray, Jonathan B. Knowles, Richard Hawkins AND John D. Malone
Infectious Diseases Threat Assessment Division, U.S. Naval Medical Research Institute, Bethesda, Maryland; Department of Enteric Infections, Walter Reed Army Institute of Research, Washington, District of Columbia; Clinical Epidemiology Branch, Naval Health Research Center, San Diego, California; BioWhittaker, Inc., Walkersville, Maryland; Internal Medicine Department, Portsmouth Naval Hospital, Portsmouth, Virginia; Infectious Diseases Division, National Naval Medical Center, Bethesda, Maryland

To determine whether military personnel deployed outside the United States are at increased risk of Helicobacter pylori infection, 1,000 male U.S. Navy and Marine Corps personnel (mean age 22 years) were evaluated. Study subjects included 200 recruits, 500 shipboard personnel deployed for six months to South America, West Africa, and the Mediterranean, and 300 ground troops deployed for five months to Saudi Arabia. Among all 1,000 subjects, 247 (25%) were seropositive for H. pylori IgG antibody by an enzyme-linked immunosorbent assay; 24% of new recruits and 25% of troops who had been on active duty for a mean of four years. The prevalence of H. pylori antibody was higher among subjects who were older, nonwhite, foreign-born, and seropositive for antibody to hepatitis A virus. Among the 601 initially seronegative subjects evaluated before and after a 5–6-month deployment outside the United States, five seroconverted, for a rate of infection of 1.9% per person-year of exposure. As found in other populations in developed countries, these data indicate that among U.S. military personnel a large proportion of H. pylori infections occur before adulthood and infection is related to demographic factors. These preliminary findings also suggest that deployed U.S. military personnel may be at increased risk of H. pylori infection compared with adult populations in developed countries either from exposure in developing countries or from crowding.






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Copyright © 1995 by the American Society of Tropical Medicine and Hygiene.