To begin with, the current shingles vaccine contains a live,attenuated (weakened)
virus which is only about 51 % effective in preventing shingles. Therefore,since it
contains a live virus,it should not be used in immunosuppressed individuals,ie,
people with cancer who are undergoing treatment with chemo or radiation therapy or
those with some other defect in their body's ability to fight infection.
A newer vaccine under development,but not yet available,has about a 97.2 %
efficacy in preventing shingles and does not contain a live virus,and,ie,may be
appropriate even in immunosuppressed individuals.
And, recent studies indicate shingles in immunocompetent people is
unlikely to recur and even if it does will probably be milder with less risk of
the very painful and often prolonged post shingles pain known as post
herpetic neuralgia (if they are less than 80 years old).
In addition,even though the risk of shingles in general is low in
otherwise healthy,elderly adults,physicians should remind patients who have
never had shingles to get vaccinated.
However,the question now in my mind is should they risk shingles by
waiting for the new vaccine or get the older less effective vaccine now?-
again since it contains a live virus it is not for immunosuppressed individuals.
And,if they elect to get the older vaccine,will future studies
show increased shingles immunity and no untoward effects being revaccinated
with the newer more effective shingles vaccine when it becomes available ?
Coming soon.
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