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A member asked:
How good are the preservative free flu vaccine?and what's the difference from the regular flu shot?
A doctor has provided 1 answer
Any flu shot better : Than none. Thimerosal is preservative used in multi-dose vials of flu vaccines while single-dose vials are preservative free. Other than that, there is no difference between the actual active flu shot. The preservative is used to prevent contamination when a multi-dose vial is punctured several times. Check out http://www.Mayoclinic.Com/health/complex-regional-pain-syndrome/ds00265 for more info.
Answered 8/5/2013
5k views
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