Figure 4.

Whole genome sequencing of healthcare workers (HCWs) and patient cases from Wards 1 and 2. PT, patient; HCW, healthcare worker. NC_045512.2 is the genome reference sequence number for SARS-CoV-2 (Wuhan genome). Please refer to Figure 1, which indicates which HCWs and patients are linked to either Ward 1 (Figure 1A) or Ward 2 (Figure 1C).