Global Burden of Invasive Nontyphoidal Salmonella Disease, 2010

• Main Authors: Trong T. Ao, Nicholas A. Feasey, Melita A. Gordon, Karen H. Keddy, Frederick J. Angulo, John A. Crump
• Format: Article
• Language: English
• Published: Centers for Disease Control and Prevention 2015-06-01
• Series: Emerging Infectious Diseases
• Subjects: bacteremia; Salmonella; incidence; global burden; invasive disease; nontyphoidal Salmonella disease
• Online Access: https://wwwnc.cdc.gov/eid/article/21/6/14-0999_article
• ISSN: 1080-6040; 1080-6059

Nontyphoidal Salmonella is a major cause of bloodstream infections worldwide, and HIV-infected persons and malaria-infected and malnourished children are at increased risk for the disease. We conducted a systematic literature review to obtain age group–specific, population-based invasive nontyphoidal Salmonella (iNTS) incidence data. Data were categorized by HIV and malaria prevalence and then extrapolated by using 2010 population data. The case-fatality ratio (CFR) was determined by expert opinion consensus. We estimated that 3.4 (range 2.1–6.5) million cases of iNTS disease occur annually (overall incidence 49 cases [range 30–94] per 100,000 population). Africa, where infants, young children, and young adults are most affected, had the highest incidence (227 cases [range 152–341] per 100,000 population) and number of cases (1.9 [range 1.3–2.9] million cases). An iNTS CFR of 20% yielded 681,316 (range 415,164–1,301,520) deaths annually. iNTS disease is a major cause of illness and death globally, particularly in Africa. Improved understanding of the epidemiology of iNTS is needed.