Incidence of nontyphoidal Salmonella intestinal infections, active component, U.S. Armed Forces, 2007-2016

During 2007-2016, there were 1,536 incident cases of nontyphoidal Salmonella infection among active component service members, with an overall crude incidence rate of 12.4 cases per 100,000 person-years (p-yrs). The overall rate for the period was higher among female service members than males. Service members aged 50 years or older and those aged 25-29 years had the highest rates of nontyphoidal Salmonella infection. Compared to their respective counterparts, overall rates were highest among non-Hispanic white service members, members of the Air Force, junior officers, recruits, and service members in healthcare occupations. Annual incidence rates were relatively stable during the first 9 years of the surveillance period. Rates peaked in 2016 at 15.9 cases per 100,000 p-yrs. The monthly distribution of the cumulative number of cases during the period showed a pattern of seasonality with a summer peak and the largest number of infections in July. During 2008-2016, a total of 132 cases were diagnosed in deployment settings, with an overall crude incidence rate of 12.6 cases per 100,000 p-yrs. Standard measures for the prevention of salmonellosis are reviewed.