Fig. 1

Epidemic curve by index date* for patients across the cardiac wards. Case numbers (Ward: Number): Patients (Ward A:27, Ward C:1, Ward B:11); Healthcare workers, HCWs (Ward A:33, Ward C:0, Ward B:9), and Visitors (Ward A:5, Ward C:0, Ward B:0). *Index date was either the symptom onset date or the date of laboratory confirmation for SARS-CoV-2, whichever came first