Publication date: May 23, 2026
While risk factors for COVID-19 outbreaks in nursing homes were well characterized during the pandemic, the factors influencing outbreak severity in the post-pandemic period remain poorly understood. We analyzed COVID-19 outbreaks in Illinois nursing homes from July 1, 2023 to June 30, 2024. A facility’s average COVID-19 prevalence was calculated as confirmed resident cases per occupied beds, with outbreak severity classified as mild (>0% to ≤10%), moderate (>10% to ≤ 20%), or severe (> 20%). Multivariate ordinal logistic regression assessed associations among outbreak severity and facility characteristics, staffing measures, and vaccination rates. Among 649 facilities, 32% experienced mild, 36% moderate, and 32% severe outbreaks. Higher odds of severe outbreaks were observed in facilities located in rural counties (OR: 2. 59, p
| Concepts | Keywords |
|---|---|
| June | COVID-19 |
| Pandemic | Illinois |
| Rural | long-term care |
| Vaccination | nursing home |
| outbreak |
Semantics
| Type | Source | Name |
|---|---|---|
| disease | MESH | COVID-19 |