Figure.
Log-log scale of foodborne Salmonella and norovirus outbreak size versus frequency from a power law for estimating underdetection of foodborne outbreaks, United States. Actual Salmonella (blue points) versus expected Salmonella (blue line) using laboratory-confirmed cases (minimum threshold 21, 90% credible interval [CrI] 11–43; slope 2.2, 90% CrI 2.1–2.5) and actual norovirus (red points) versus expected norovirus (red line) using estimated cases (minimum threshold 42, 90% CrI 22–123; slope 2.6, 90% CrI 2.3–3.3).