How far covid 19 vaccine is reliable? Can you guess the fate of human beings?

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Sir It is not yet known how long the protection of the COVID-19 vaccine will last. We will know more through ongoing research. Clinical trials are currently happening to find out if we will need booster doses on an annual or longer basis.Vaccines are preventing serious illness and death, and, as much as possible, transmission of the virus that causes disease. On the other side, it is being heard that he/ she died after got the vaccine. There have been various cases in which vaccines were suspected of being responsible for serious accidents. But the link between vaccines and those accidents have not been confirmed

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It's difficult to understand the virus, as much the human behavior.

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