Question

write a short note on vaccines

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Answer 1

Answer:

it is for a dossage for a child to get immuntiny hormone

Answer 2

Answer:

A vaccine is a biological preparation that provides active acquired immunity to a particular infectious disease.[1] A vaccine typically contains an agent that resembles a disease-causing microorganism and is often made from weakened or killed forms of the microbe, its toxins, or one of its surface proteins