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. 2022 Jan 11;14(1):120. doi: 10.3390/v14010120

Figure 4.

Figure 4

A summary of the potential infection route from animal handlers to the three lions. Direct (solid line) and indirect (dashed line) human contacts were traced and tested for SARS-CoV-2 RNA and IgG antibodies. Negative cases are coloured in black. PCR positive cases are coloured in red, while serologically positive cases are coloured in yellow. The two contact cases which were unlikely to be responsible for infecting the lions, owing to differing Delta sequences (ZRUCWL012) and previous positive tests (ZRUCWL006) are marked with a cross.