This article is an element one in an exceedingly series of explainers on vaccine development and distribution. This text focuses on how vaccines work to safeguard our bodies from disease-carrying germs. Part two focused on the ingredients in a very vaccine and therefore the three test phases. Part three outlines the subsequent a part of the vaccine journey: the steps from completing the trial phases through to distribution. The body's natural response A pathogen is a bacterium, virus, parasite or fungus that can cause disease within the body. Each pathogen is made up of several subparts, usually unique to that specific pathogen and the disease it causes. http...