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Most ______ immunizations must be re-administered on a regular basis.
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3 votes
Most ______ immunizations must be re-administered on a regular basis.

User Ricaurte
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2 Answers

7 votes

Artificial, i think ‍

User Revgum
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5 votes
Vaccine immunization is the correct answer I really hope that this helps and 
User Aditya T
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