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List of keywords searched on web-based platforms.
| Investigated period | Period number | Searched keywords |
| Jan 1-Feb 13, 2020 | 1 | 2019-ncov, novel coronavirus, coronavirus,chinese virus, chinese coronavirus |
| Feb 11-May 18, 2020 | 2 | sars-cov-2, covid-related (ie, covid, covid 19, covid19, covid-19), novel coronavirus, coronavirus |
| May 19, 2020-Mar 17, 2021 | 3 | sars-cov-2, covid-related (ie, covid, covid 19, covid19, covid-19), novel coronavirus, coronavirus |
