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Message: [QUOTE="Shellandshilo1956, post: 188123, member: 319"]Afraid not! Except in theory only. For this to happen, the vaccine virus(retro or vector) would need to be exactly the same as the infecting virus. And, since we don't give people vaccines made with live unaltered, or unmodified pathogens, this is NOT going to happen. And since all pathogens evolve and mutate, a "sterilization vaccine" will be impossible to make. You are talking about a "GOD" vaccine, that would prevent all viruses from entering the cell and replicating. Our natural immune system's antibodies is our best "sterilization vaccine". There are no viruses used in any of the Covid-19 vaccines. Vaccines may prevent the severity of the disease, but they can't prevent you from becoming infected(sterilizing vaccines). This is because our immune system is not proactive, it is reactive.[/QUOTE]