American Journal of Medical and Clinical Sciences. 2021; 6(4):(59-68)


How has the Vaccine Changed COVID-19?

Fernando Quintana, Hongwei Wang, Arthur Jimenez, David Landa, Krystal Garza, Oscar J. Garcia

Abstract
Almost two years since the first case of Coronavirus 2019. Vaccine development in many countries have been accelerated due to the suffering of COVID-19 pandemic. We analyzed the daily data related to new cases, new deaths, and vaccinations in United States of America, European Union, and Japan. Each country or area representing one continent in order to evaluate the impact of COVID-19 vaccination. We conclude that the vaccination did help decrease the daily new cases in all those three countries or area at the beginning. However, due to the group of population who refused to take vaccination, the impact of the vaccination in controlling the virus decreased as time goes by, situation that happened in all those three countries or area. We would highly suggest the government in each country to take all possible action to encourage people to be fully vaccinated as soon as possible and maintain other practices of COVID-19 infection control.
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