Table 8 Keyword list for online media data.

From: Integrating Internet multisource big data to predict the occurrence and development of COVID-19 cryptic transmission

Type

Keywords

Baidu information index

COVID-19, coronavirus, epidemic, infectious disease, pneumonia, SARS, influenza, vaccine

TikTok composite index

COVID-19, coronavirus, epidemic, infectious disease, pneumonia, SARS, influenza, vaccine

Stock sector index

Flu, biomedical, pharmaceutical ETF, pharmaceutical business, vaccine

  1. ETF exchange traded fund.
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