Fig. 1.

Epidemiological transmission network of SARS-CoV-2 Delta VOC transmission in Guangzhou.

One hundred and fifty-seven infected patients with a clear transmission chain were shown in the network. Each transmission generation is shown in rhombus or circles with different colors. The first-generation patient (rhombus with black solid line, G1) is in the middle. G1 was phylogenetically linked to an imported case (rhombus with red dotted line, G0). Colored arrows indicate different transmission routes. The transmission includes dining together, household, community (chat, encounter, taking the elevator together) and others (work and social contacts). Severe (dotted line) and critical (solid line) patients were labelled with squared shapes. Asterisks indicate patients in or to other cities (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.).