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Table 2 System features. Percentage of people consulting different healthcare providers, percentage of people coded to an indicator, and proportional coverage of each PHE syndromic surveillance system. Upper and lower estimates are presented in brackets

From: A methodological framework for the evaluation of syndromic surveillance systems: a case study of England

System People consulting healthcare (%) Estimated current coverage (%) People coded to an indicator (%)
  Influenza Cryptosporidiosis Influenza Cryptosporidiosis Influenza Cryptosporidiosis
  National All sites National Location A Location B Location C National All sites
EDSSS 0.91% (0.5–5.0%) 0.01% (0.0025–0.023%) 7% 15% 23% 47% 6% 75%
GPIHSS 10% (5.0–30.0%) 2.3% (1.0–5.6%) 64% 64% 95% 86% 6% 75%
GPOOHSS 1% (0.5–3.0%) 2.3% (1.0–5.6%) 65% 65% 7% 33% 29% 75%
NHS-111 1.28% (0.25–10.0%) 0.8% (0.1–0.9%) 100% 100% 100% 100% 22% 75%