Volume 30, Supplement—March 2024
SUPPLEMENT ISSUE
Surveillance
Development and Evaluation of Surveillance System for Identifying Jail-Associated COVID-19 Cases in Minnesota, USA, 2022
, Erica Rapheal1, Rebecca Huebsch, Tiana Bastian, Trisha J. Robinson, Hanna Chakoian, Karen G. Martin2, and Jennifer Zipprich2
Table 3
False-positive and false-negative classifications made by the KAM surveillance system while detecting and classifying COVID-19 cases among persons detained in jail, Minnesota, USA, 2022*
| Category | No. (%) cases |
|---|---|
| False positives: KAM positive, true detention negative; 249 cases | |
| Detention did not overlap with specimen date | 131 (52.6) |
| Jail staff mistaken as detained | 80 (32.1) |
| Not jail-associated, erroneous identification in step 1† |
38 (15.3) |
| False negatives: KAM negative, true detention positive; 182 cases | |
| Not identified in step 1† | 100 (55.0) |
| Erroneously classified not jail-associated in step 2† | 69 (37.9) |
| Detained person classified as jail staff | 13 (7.1) |
*KAM, keyword and address matching. †During KAM step 1, keyword and address matching tools flagged COVID-19 cases as potentially associated with jails; during step 2, Minnesota Department of Health staff manually reviewed each flagged case to verify confinement information and classify cases by jail facility and case type (detained person of staff) ([[ANCHOR###F2###Figure 2###Anchor]]).
Minnesota Department of Health, Saint Paul, Minnesota, USA
1These first authors contributed equally to this article.
2These senior authors contributed equally to this article.