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What specific topics with respect to vaccine brand types, including Pfizer, Moderna, Jassen, and Astra Zeneca, are discussed on Twitter in Korea? Are there any differences among these topics?
How about their sentiments? Do the sentiments change over time?
What are the specific topics on Twitter in Korea with terms related to AEs of COVID-19 vaccines?
J Med Internet Res 2023;25:e42623
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COVID-19 Vaccine Perception in South Korea: Web Crawling Approach
Since early 2021, 2 types of COVID-19 vaccines, Astra Zeneca (AZ) and Pfizer, have been produced in Korea. As of May 10, 2021, 4,181,003 people have been vaccinated—2,014,788 with AZ and 2,166,215 with Pfizer. The vaccine refusal rate in Korea was 33%, and these individuals refused to be vaccinated despite being eligible for COVID-19 vaccination.
JMIR Public Health Surveill 2021;7(9):e31409
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