Fig. 1
From: The value of environmental surveillance for pandemic response
Health costs, economic costs, and net benefit of alternative surveillance systems. Notes: Dots indicate posterior mean estimates and lines cover 95% of the posterior predictive distribution. Purple scenarios are the ones in which the ESS is used, whereas the blue scenario represents a case with conventional (i.e., syndromic) surveillance. This plot shows that better surveillance improves health outcomes reducing health costs, but also increases NPI costs per person. On balance, total costs (Health + NPI cost) are reduced with improved surveillance, resulting in a positive net-monetary benefit under baseline assumptions - even for a system that only provides a 2-day earlier warning.
