1 doctor weighed in:

My 3 mth old baby had to get his hepatitis b; polio; dtap shots over again, why?

1 doctor weighed in
Dr. James Ferguson
Pediatrics

In brief: Building immunity

The infant has a weak immune memory, leaving the protection from single vaccines to a duration of months rather than years unless they receive booster doses.
After the boosters are given, and the kid gets older, the protection can last years.Even then, some will require boosting (tetanus) well into old age to maintain a protective level.

In brief: Building immunity

The infant has a weak immune memory, leaving the protection from single vaccines to a duration of months rather than years unless they receive booster doses.
After the boosters are given, and the kid gets older, the protection can last years.Even then, some will require boosting (tetanus) well into old age to maintain a protective level.
Dr. James Ferguson
Dr. James Ferguson
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