Reduce infections caused by Listeria — FS‑03 Data Methodology and Measurement

About the National Data

Data

Baseline: 0.27 laboratory-diagnosed, domestically-acquired Listeria monocytogenes infections per 100,000 population occurred on average annually in 2016-18

Target: 0.22 per 100,000

Numerator
Number of laboratory-diagnosed, domestically-acquired cases of illness caused by Listeria monocytogenes reported to FoodNet.
Denominator
Number of persons in FoodNet surveillance area.
Target-setting method

Percent improvement

Target-setting method details
20 percent improvement from the baseline.
Target-setting method justification
Trend data were evaluated for this objective but it was not possible to project a target because the trend was not moving in the desired direction. A 20 percent improvement from the baseline was used to calculate a target. This method was used because the Healthy People 2030 Workgroup Subject Matter Experts (SMEs) viewed this as an ambitious yet achievable target. The SMEs took into consideration new technologies and increased understanding of foodborne pathogens expected over the next decade.

Methodology

Methodology notes

FoodNet conducts active population-based surveillance in 10 U.S. states for all laboratory-diagnosed infections with select enteric pathogens transmitted commonly through food. Campylobacter, Listeria, Salmonella, Shiga toxin-producing E. coli (STEC) O157 and non-O157, Shigella, Vibrio, and Yersinia infections are diagnosed by laboratory testing of samples from patients. FoodNet personnel regularly contact clinical laboratories to ascertain laboratory-diagnosed cases of infection occurring within the surveillance sites. Hospitalizations occurring within 7 days of specimen collection date are recorded, as is the patient's status at hospital discharge or 7 days after the specimen collection date if not hospitalized. Deaths and hospitalizations are attributed to the pathogen if they occur within 7 days of the specimen collection date regardless of actual cause. International travel occurring within 30 days before illness onset is recorded for listeriosis cases. The infection is considered domestically-acquired if no travel occurred within 30 days before illness onset regardless of actual cause.

History

Comparable HP2020 objective
Modified, which includes core objectives that are continuing from Healthy People 2020 but underwent a change in measurement.
Changes between HP2020 and HP2030
This objective differs from Healthy People 2020 objective FS-1.3 in that objective FS-1.3 tracked the number of culture-confirmed cases of Listeria monocytogenes infections, while this objective tracks domestically acquired Listeria monocytogenes infections, both culture-confirmed and those identified through culture-independent diagnostic tests (CIDTs).
Revision History
Revised. 

In 2021, the original baseline was revised from 0.26 to 0.27 due to a data update that changed the baseline years from 2015-2017 to 2016-2018. The target was adjusted from 0.21 to 0.22 to reflect the revised baseline using the original target-setting method.