What if Vaccine is not Developed For 'COVID-19'?
WHAT IF VACCINE IS NOT DEVELOPED FOR 'COVID-19' ________________________________________ WHAT IS VACCINE AND ITS HISTORY? DEVELOPMENT OF VACCINE. WHY IS IT DIFFICULT TO DEVELOP VACCINE FOR VIRUSES? IF 'COVID-19' VACCINE IS NOT DEVELOPED. ________________________________________ WHAT IS VACCINE AND ITS HISTORY . A substance used to stimulate the production of antibodies and provide immunity against one or several diseases, prepared from the causative agent of a disease, its products, or a synthetic substitute, treated to act as an antigen without inducing the disease. A Vaccine is a Biological Preparation that improves immunity to a particular Disease. 1. (A) HISTORY OF VACCINE Historically Vaccines have been a 'Greatest Public Health Tool' The practice of immu...
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