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A Comprehensive Analysis of COVID-19 Vaccine Discourse by Vaccine Brand on Twitter in Korea: Topic and Sentiment Analysis

A Comprehensive Analysis of COVID-19 Vaccine Discourse by Vaccine Brand on Twitter in Korea: Topic and Sentiment Analysis

Moreover, most countries have used various vaccine brands (eg, Moderna, Pfizer, Astra Zeneca, and Jassen), each with different use guidelines and safety and efficacy profiles [14,15]. However, there have been few in-depth studies on topics and sentiments focused on AEs, particularly over long periods after rollout. Korea reported that 70% of its population had already been fully vaccinated within 8 months of the start of the vaccination drive on February 26, 2021 [16].

Susan Park, Young-Kyoon Suh

J Med Internet Res 2023;25:e42623

Multiple Keratoacanthomas Following Moderna Messenger RNA-1273 COVID-19 Vaccination Resolved With 5-Fluorouracil Treatment: Case Report

Multiple Keratoacanthomas Following Moderna Messenger RNA-1273 COVID-19 Vaccination Resolved With 5-Fluorouracil Treatment: Case Report

The Moderna messenger RNA (m RNA) COVID-19 vaccine was granted emergency use authorization within the United States in December 2020. As vaccination administration expands, a growing body of evidence becomes available, allowing for a greater understanding of a novel vaccine’s adverse effects. A recent registry-based study by Mc Mahon et al [1] documented 414 unique cases of cutaneous reactions after COVID-19 vaccination, with 343 (83%) occurring in patients who received the Moderna m RNA vaccine.

Fahad Ahmed, Nashwah Memon, Adel Haque

JMIR Dermatol 2022;5(4):e41739

The Risk of Hospitalization and Mortality After Breakthrough SARS-CoV-2 Infection by Vaccine Type: Observational Study of Medical Claims Data

The Risk of Hospitalization and Mortality After Breakthrough SARS-CoV-2 Infection by Vaccine Type: Observational Study of Medical Claims Data

By late February 2021, the Pfizer-Bio NTech (Pfizer), Moderna, and Johnson & Johnson (J&J/Janssen) vaccines were all approved for emergency use authorization. The Pfizer and Moderna vaccination drives started much earlier, in late December (Figures S2 and S3 in Multimedia Appendix 1), as compared to that of the Janssen vaccines, which also saw a stall in vaccine rates in mid-April (Figure S4 in Multimedia Appendix 1).

Meghana Kshirsagar, Md Nasir, Sumit Mukherjee, Nicholas Becker, Rahul Dodhia, William B Weeks, Juan Lavista Ferres, Barbra Richardson

JMIR Public Health Surveill 2022;8(11):e38898

Monitoring Mentions of COVID-19 Vaccine Side Effects on Japanese and Indonesian Twitter: Infodemiological Study

Monitoring Mentions of COVID-19 Vaccine Side Effects on Japanese and Indonesian Twitter: Infodemiological Study

Marcec and Likic [13] applied lexicon-based sentiment analysis to English tweets mentioning Astra Zeneca, Pfizer, and Moderna and found that the sentiment for Pfizer and Moderna was generally more positive than that for Astra Zeneca. Sattar and Arifuzzaman [14] analyzed tweets related to public sentiment about COVID-19 vaccination awareness and found strong positive sentiments despite the side effects of the vaccine.

Kiki Ferawati, Kongmeng Liew, Eiji Aramaki, Shoko Wakamiya

JMIR Infodemiology 2022;2(2):e39504