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Fig. 2 | BMC Medical Research Methodology

Fig. 2

From: Need of care in interpreting Google Trends-based COVID-19 infodemiological study results: potential risk of false-positivity

Fig. 2

COVID-19 weekly positivity trends and related GT search volume trends for ‘COVID’ in each region. Figures show weekly trends of each country (from upper-left to lower-right in alphabetical order of country name), where the solid lines show COVID-19 positivity trends while the dotted lines denote GT search volume trends for ‘COVID’ word (or its corresponding Japanese word) in each region. Both trends are plotted in a normalized manner so that the maximum value within the period becomes 100%. X-axis in months since October 2019 to September 2020

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