Socioeconomic bias in influenza surveillance
Fig 1
Datasets used in the analysis.
The top panel shows influenza-associated inpatient hospitalizations in black, as defined by ICD9 codes 486 and 487, the next panel shows ILINet in red where the proportion of doctor visits are for influenza-like illness, the next panel shows BioSense 2.0 in blue, which is the proportion of ED visits per week that are for an upper respiratory infection. The final panel shows the GFT estimate, in orange, of the number of influenza-like-illness cases per 100,000 people.