A Comparative Study of Eight Classes of COVID 19 Vaccines

A comparative study of eight classes of COVID 19 vaccines are done.  There is an ongoing global effort to develop an effective vaccine against COVID-19. There are eight types of COVID 19 vaccine. Research community loves RNA and DNA based vaccines, but history has shown success in non-nucleic-acid vaccines. Here, we analysed vaccines in an open mind. We explained the strength and weakness of each class of COVID 19 vaccine