Table 2.
Healthcare worker characteristics on wards with active surveillance for influenza, University Hospital Zurich, 2015/16 influenza season
| Characteristic | Department | ||||
|---|---|---|---|---|---|
| All departments (n = 59)1 | Pulmonology (n = 17) | Hematology (n = 19) | Internal medicine (n = 22) | P-value | |
| Age, years, median (range) | 30.5 (18.0–58.0) | 30.5 (18.5–51.6) | 31.1 (21.5–58.0) | 26.7 (18.0–51.9) | 0.52 |
| Female sex | 50 (84.7) | 14 (82.4) | 17 (89.5) | 19 (86.4) | 0.45 |
| Profession | |||||
| Nurse | 49 (83.1) | 13 (76.5) | 15 (79.0) | 21 (95.5) | 0.27 |
| Physician | 9 (15.3) | 3 (17.7) | 4 (21.1) | 1 (4.6) | |
| Other | 1 (1.7) | 1 (5.9) | 0 (0) | 0 (0) | |
| Charlson comorbidity index, median (range) | 0 (0–1) | 0 (0–1) | 0 (0–0) | 0 (0–1) | 0.88 |
| Myocardial infarction | 0 (0) | 0 (0) | 0 (0) | 0 (0) | n.a. |
| Congestive cardiac insufficiency | 0 (0) | 0 (0) | 0 (0) | 0 (0) | n.a. |
| Peripheral vascular disease | 0 (0) | 0 (0) | 0 (0) | 0 (0) | n.a. |
| Chronic pulmonary disease | 2 (3.4) | 1 (5.9) | 0 (0) | 1 (4.6) | 0.59 |
| Conjuctive tissue disease | 0 (0) | 0 (0) | 0 (0) | 0 (0) | n.a. |
| Diabetes without complications | 0 (0) | 0 (0) | 0 (0) | 0 (0) | n.a. |
| Peptic ulcer disease | 1 (1.7) | 0 (0) | 0 (0) | 1 (4.6) | 0.44 |
| Chronic disease of the liver or cirrhosis | 0 (0) | 0 (0) | 0 (0) | 0 (0) | n.a. |
| Hemiplegia | 0 (0) | 0 (0) | 0 (0) | 0 (0) | n.a. |
| Moderate or severe kidney disease | 0 (0) | 0 (0) | 0 (0) | 0 (0) | n.a. |
| Diabetes with chronic complications | 0 (0) | 0 (0) | 0 (0) | 0 (0) | n.a. |
| Solid organ malignancy | 0 (0) | 0 (0) | 0 (0) | 0 (0) | n.a |
| Leukemia | 0 (0) | 0 (0) | 0 (0) | 0 (0) | n.a. |
| Lymphoma | 0 (0) | 0 (0) | 0 (0) | 0 (0) | n.a. |
| Moderate or severe liver disease | 0 (0) | 0 (0) | 0 (0) | 0 (0) | n.a. |
| Malignant tumor, metastasis | 0 (0) | 0 (0) | 0 (0) | 0 (0) | n.a. |
| AIDS | 0 (0) | 0 (0) | 0 (0) | 0 (0) | n.a. |
| Dementia | 0 (0) | 0 (0) | 0 (0) | 0 (0) | n.a. |
| Household crowding index, median (range) | 1.3 (0.5–3) | 1.3 (1–2.5) | 1.3 (1–2) | 1.3 (0.5–3) | 0.99 |
| Children (< 18 years) in household | 11 (18.6) | 5 (22.7) | 1 (5.3) | 5 (22.7) | 0.24 |
Data are n (%), unless indicated otherwise. 1Sum of HCWs of different departments does not equal total number as one HCW worked on all wards and thus was not assigned to one single department
Abbreviations: n.a. not applicable, AIDS acquired immunodeficiency syndrome