Abstract: Background: Covid-19 has been around for a year and does not seem to stop. Different types of vaccines have been rolled out in many countries and showed different outcomes. Objective: The purpose of the study is to compare outcomes of different vaccines from infected, death, and vaccination rates of each country. Materials and Methods: This study had an analysis for The US, Brazil, The UK, France, Thailand, Israel, Chile and Indonesia using the Our World Data research and statistics website. Data of the number of COVID-19 infected cases, death and COVID-19 vaccinations on dates including 31th December 2020, 31st January, 28th February, 31st March, 31st March, 30th April, 31st May, 30th June, 31st July 2021 were collected. Percent change of COVID-19 infected cases and death were calculated. Data were presented in tables comparing each period. Results: Comparison shows that vaccines can slow down viral infections at a certain point but not completely because there are new variants mutating. Conclusion: Vaccines should be constantly upgraded. Moreover, vaccine policy should support different groups of people, risk diversification and mass customization. Despite vaccination, fully self protection should still remain. There still should be intervention in health behaviors to create herd immunity.
Keywords: Covid-19 vaccines, Coronavirus, Covid-19 variants.
Title: Comparative Covid-19 Vaccine roll out study
Author: Pariyakorn Chuensuwonkul
International Journal of Healthcare Sciences
ISSN 2348-5728 (Online)
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