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  11. How Online Public Opinion Evolves Before And After Policy Adjustments In Response To Major Public Health Emergencies

How online public opinion evolves before and after policy adjustments in response to major public health emergencies

Zhendong Niu1, Yunyun Gao2, Xusheng Wu3

  • 1Department of Biomedical Informatics, School of Life Sciences, Central South University, Changsha, China.

Frontiers in Public Health
|June 24, 2025

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View abstract on PubMed

Summary
This summary is machine-generated.

Public opinion on COVID-19 policy adjustments initially surged then declined, with long-term positive sentiment despite short-term concerns. Effective communication and resource management are key for public health emergency response.

Area of Science:

  • Public Health
  • Sociology
  • Communication Studies

Background:

  • Major public health emergencies significantly influence public opinion.
  • Research often overlooks public attitude evolution after containment measures are relaxed.
  • China's 2022 COVID-19 policy optimization offers a unique study opportunity.

Purpose of the Study:

  • To analyze public attitudes towards adjusted public health emergency measures.
  • To understand the temporal evolution of public opinion.
  • To inform policy and public opinion management strategies.

Main Methods:

  • Collected Baidu Index and Weibo data (Oct 2022 - Mar 2023).
  • Applied Public Opinion Life Cycle Theory to analyze opinion intensity.
  • Used SKEP model for sentiment analysis and LDA for topic mining on Weibo data.
Keywords:
LDA modelepidemic prevention and control policiesevolution of public opinionmajor public health emergencies

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Main Results:

  • Public opinion surged initially post-adjustment but subsided.
  • Long-term public attitude is generally positive, with short-term negative sentiment possible.
  • Discussion topics shifted from community control to economic/daily life, with persistent concerns on medication and reinfection.

Conclusions:

  • Policymakers should clarify policy rationale and address concerns promptly.
  • Ensuring adequate medical resources and phased implementation is crucial.
  • Encouraging positive information sharing by enterprises and opinion leaders is recommended.
sentiment analysis