The Cut Throat Deadly Race between Time and Invention of Covid 19 Vaccine
Covid-19 pandemic shocks and locks whole world at the end of 2019 and 2020. Maximum death occurred in USA followed by Italy and Spain. Here discussion and analysis have been focused on various types of vaccines of Corona virus on basis of its spike antigen S and its corresponding ACE2 receptor on some type of human cells. The ultimate target of all types of vaccines is to prevent binding of ACE2 receptor to S antigen of corona, except long acting interferons. The interferons are natural antiviral substances produced by virus infected mammalian cells and are of three types α, β and δ. The main sources of the latest information of covid 19 vaccination has been internet websites and social networking sites like whatsapp, facebook etc.