Global Vaccines Market Size, Trends & Growth Opportunity, By Type (Live Attenuated Vaccines, Inactivated Vaccines, and Others), By Route of Administration (Intramuscular, Subcutaneous, Others), By Valence (Monovalent and Polyvalent (Multivalent)), By COVID-19 Vaccines into Prevalence, COVID-19 Vaccines Market Size and Forecast, Initiatives for Coronavirus Vaccine Development, Authorized Vaccines &