Varies with age: If you are referring to the adult preparation the answer is simple. The pn23 vaccine is given once to adults after the age of 65 and may be given a second time if the a first dose was given before 65. Some chronic medical conditions where the immune system is impaired may lead to additional doses on a case by case basic. Info is available at the cdc website: www.Cdc.Gov.
Answered 3/14/2018
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A doctor has provided 1 answer
A doctor has provided 1 answer
5 doctors weighed in across 3 answers
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