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Google Trends-based non-English language query data and epidemic diseases: a cross-sectional study of the popular search behaviour in Taiwan.


ABSTRACT:

Objective

This study developed a surveillance system suitable for monitoring epidemic outbreaks and assessing public opinion in non-English-speaking countries. We evaluated whether social media reflects social uneasiness and fear during epidemic outbreaks and natural catastrophes.

Design

Cross-sectional study.

Setting

Freely available epidemic data in Taiwan.

Main outcome measure

We used weekly epidemic incidence data obtained from the Taiwan Centers for Disease Control and online search query data obtained from Google Trends between 4 October 2015 and 2 April 2016. To validate whether non-English query keywords were useful surveillance tools, we estimated the correlation between online query data and epidemic incidence in Taiwan.

Results

With our approach, we noted that keywords ('common cold'), ('fever') and ('cough') exhibited good to excellent correlation between Google Trends query data and influenza incidence (r=0.898, p<0.001; r=0.773, p<0.001; r=0.796, p<0.001, respectively). They also displayed high correlation with influenza-like illness emergencies (r=0.900, p<0.001; r=0.802, p<0.001; r=0.886, p<0.001, respectively) and outpatient visits (r=0.889, p<0.001; r=0.791, p<0.001; r=0.870, p<0.001, respectively). We noted that the query ('enterovirus') exhibited excellent correlation with the number of enterovirus-infected patients in emergency departments (r=0.914, p<0.001).

Conclusions

These results suggested that Google Trends can be a good surveillance tool for epidemic outbreaks, even in Taiwan, the non-English-speaking country. Online search activity indicates that people are concerned about epidemic diseases, even if they do not visit hospitals. This prompted us to develop useful tools to monitor social media during an epidemic because such media usage reflects infectious disease trends more quickly than does traditional reporting.

SUBMITTER: Chang YW 

PROVIDER: S-EPMC7337886 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature

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Publications

Google Trends-based non-English language query data and epidemic diseases: a cross-sectional study of the popular search behaviour in Taiwan.

Chang Yu-Wei YW   Chiang Wei-Lun WL   Wang Wen-Hung WH   Lin Chun-Yu CY   Hung Ling-Chien LC   Tsai Yi-Chang YC   Suen Jau-Ling JL   Chen Yen-Hsu YH  

BMJ open 20200705 7


<h4>Objective</h4>This study developed a surveillance system suitable for monitoring epidemic outbreaks and assessing public opinion in non-English-speaking countries. We evaluated whether social media reflects social uneasiness and fear during epidemic outbreaks and natural catastrophes.<h4>Design</h4>Cross-sectional study.<h4>Setting</h4>Freely available epidemic data in Taiwan.<h4>Main outcome measure</h4>We used weekly epidemic incidence data obtained from the Taiwan Centers for Disease Cont  ...[more]

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