Question

what is single shot vaccine ?​

Answer 1

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Why there are two shots Research during the trial phase for each of the two-dose vaccines showed that, after a certain time, the rate of immunity to COVID-19 plateaued with just one dose but that the second dose helped boost the immunity to higher rates.

Answer 2

Answer:

The vaccine requires only one shot, so you are protected earlier than with other currently available vaccines. You also do not have to deal with possible side effects associated with the second dose of the other vaccines.