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Figure 4 | BMC Infectious Diseases

Figure 4

From: Assessing the role of contact tracing in a suspected H7N2 influenza A outbreak in humans in Wales

Figure 4

Time-ordered network of linked cases showing estimated secondary infections in absence of treatment. The 14 human cases (circles), along with the infected market and flock (squares), plotted from left to right in time ordered position; also shown are traced links between them categorised as home (red), work (green) and other (blue). Links involving birds are in black. The colour of a circle shows the length of time between the onset of symptoms and treatment being given, while the area is proportional to the approximate expected number of subsequent cases had they not been treated.

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