Covid-19 Vaccines: Overview, Comparative Analysis and Dynamics
Doaa Zamel1,2,4* and Atta Ullah Khan3,4
1Department of Biochemistry, Faculty of Science, Helwan University, Helwan, Egypt
2Department of Environmental Engineering, Institute of Urban Environment, CAS, China
3CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, China
4University of Chinese Academy of Sciences, Beijing, PR China
*Corresponding Author: Doaa Zamel, Department of Biochemistry, Faculty of Science, Helwan University, Helwan, Egypt.
May 05, 2022; Published: June 21, 2022
As the mankind experienced the serious situation of COVID-19 that hit the whole world, scientists thought that vaccines are the nearest solution to eliminate this pandemic and minimizes its severity. Therefore, they started the race to develop an effective and safe vaccine, each group in their laboratory working day and night to save the whole world. Vaccines proved their protection roles against many past infections, and here against COVID-19, extensive studied and new technologies were accurately tested. The results came up with several vaccines ready to use and others still under clinical trials, however, fear form vaccines and questions on the best and more safe vaccine are everywhere among people. To be clear, gaining trust in the market became not easy for vaccine production companies, especially in this strong competition after the availability of several vaccine at the same time. By time passage, vaccine distribution and intake will be easier, particularly when people could trust these vaccines and be sure of their safety and efficacy. Many countries could produce vaccines, among of them; China, United States, United Kingdom and Russia and their vaccines spread internationally nowadays. To convince people which vaccine is the best and most safe, it is not easy and this matter will come after long-term of use and experience. However, there is no guarantee that these vaccines will provide 100% protection against COVID-19 and this will be proved also after long-term of use. This review presents comparative analysis of the most common types of COVID-19 vaccines which are already in use in the world market and the dynamics of vaccination over all the world.
Keywords: COVID-19; Vaccines; Types; Efficacy; Safety; Analysis; Dynamics
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