Figure 5
From: GET WELL: an automated surveillance system for gaining new epidemiological knowledge
Data on "influenza", 2009. From the top: queries on influenza on Google according to Google Insights for Search (data are normalized and scaled); queries on influenza on the medical web site Vårdguiden (data are normalized); Google flu trends estimates; estimates from tailored Vårdguiden model; sentinel influenza data reported to SMI. Data are from week 50, 2008 to week 49, 2009.