Google Trends is an online tool that allows measurement of search term popularity on Google, spatially and temporally. While not an epidemiological tool for determining incidence, it can estimate the popularity of a certain disease by search volume over time. It has previously correlated well with infectious disease incidence and has demonstrated utility in disease forecasting, especially with influenza data. We utilized Google Trends to investigate whether search interest in common gastrointestinal (GI) symptoms would correlate with coronavirus disease 2019 (COVID-19) incidence data.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7834024 | PMC |
| http://dx.doi.org/10.1016/j.cgh.2020.06.058 | DOI Listing |
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