ArticleOpen forum infectious diseases2026
Incidence of Sporadic Invasive Listeriosis in the United States Remains Stable Despite Aging Population, Disproportionately Affects Some Groups (FoodNet, 2008-2023).
Article in Open forum infectious diseases, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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17 authors.
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Abstract
Background: Listeriosis is a severe foodborne illness with elevated incidence rates among pregnant women, older adults, individuals with medical comorbidities, and certain racial and ethnic subpopulations. Foodborne Diseases Active Surveillance Network (FoodNet) data allow examination of incidence trends and differences. Methods: We analyze sporadic invasive listeriosis cases reported to FoodNet from 2008 to 2023. Incidence rates and rate ratios are calculated overall and by studied period, pregnancy status, age, sex, race, and ethnicity. US Census Bureau demographic projections are used to estimate incidence rate changes expected from changes in the structure of the population with time. Results: The overall incidence rate of domestically acquired sporadic listeriosis has remained stable in the FoodNet catchment area over the 15-year period, with a latest estimate (2020-2023) of 0.25 (95% confidence interval [95% CI, .22-.30) per 100 000 person-years. No significant temporal trend in any studied subpopulation is observed. Pregnant women have a 64-fold (95% CI, 47-87) higher risk when compared to non-pregnant women of reproductive age. Incidence rate in the non-pregnant population rises with age, and Hispanic, non-Hispanic Asian, and non-Hispanic Black populations have higher rates than non-Hispanic White populations. An increased overall incidence rate would have been expected because of demographic shifts; instead, the observed stable incidence rate suggests approximately 16% lower exposure to Conclusions: Stable listeriosis incidence rates despite demographic shifts suggest reduced population exposure to
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