JMIR Public Health Surveill. 2021 Sep 18.
Wai-Kit Ming,
Fengqiu Huang,
Qiuyi Chen,
Beiting Liang,
Aoao Jiao,
Taoran Liu,
Huailiang Wu,
Babatunde Akinwunmi,
Jia Li,
Guan Liu,
Casper Jp Zhang,
Jian Huang,
Qian Liu.
BACKGROUND: Due to the COVID-19 pandemic, health information related to COVID-19 has spread across the news media worldwide. Google is among the most used Internet search engines, and the Google Trends tool can reflect how the public seek COVID-related health information during this period.OBJECTIVE: To understand health communication through Google Trends and news coverage and to explore their relationship with prevention and control of COVID-19 in the early epidemic stage.
METHODS: To achieve the study objectives, we analyzed the public's information-seeking behaviors on Google and news media coverage on COVID-19. We collected data on COVID-19 news coverage and Google search queries for eight countries (United States, United Kingdom, Canada, Singapore, Ireland, Australia, South Africa, and New Zealand) between January 1, 2020 and April 29, 2020, and depicted the characteristics of the trend of news coverage on COVID-19 over time, as well as the search queries trends on the topics of COVID-19 related diseases, treatments and medical resources, symptoms and signs, and public measures. And the search queries trend provided relative search volume (RSV) as an indicator to represent the popularity of a specific search term in a specific geographic area over a period. Also, time-lag correlation analysis was used to further explore the relationship between the trend of search terms and the number of daily new cases, the relationship between search terms trends and news coverage.
RESULTS: Across all search trends in eight countries, almost all search peaks were formed between March and April 2020, and declined occurred in April 2020. Regarding COVID-19 related diseases, in most countries, the RSV of "coronavirus" increased earlier than "covid-19", but around April 2020, the search volume of "covid-19" surpassed "coronavirus". For treatments and medical resources, the most and least searched terms were "mask" and "ventilator", respectively. In the topic of symptoms and signs, "fever" and "cough" were the most searched terms. And the RSV of "lockdown" was significantly more than "social distancing" on the topic of public measures. Besides, when combining the search trends with news coverage, there were three main patterns: the United States pattern, the Singapore pattern, and the other-countries pattern. In the time-lag correlation analysis between the RSV of the topic "Treatment and medical resources" and the number of daily new cases, except for Singapore, the RSV of this topic were positively correlated with daily new cases in other countries, with the maximum correlation of 0.8 (United States). And in the time-lag correlation analysis between the overall RSV of "Diseases" and the number of daily news, the overall RSV of this topic were positively correlated with the number of daily news, the maximum correlation coefficient was more than 0.8, and the search behavior was 0-17 days earlier than the news coverage.
CONCLUSIONS: Our findings revealed public interest in masks, disease control, and public health measures, and revealed the potential value of Google Trends in the face of the emergence of new infectious diseases. Also, Google Trends combined with news media can achieve more efficient health communication. Therefore, both news media and Google Trends contribute to the early prevention and control of the epidemic.
CLINICALTRIAL: