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How much mercury is in a flu shot?

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Flu vaccines in multi-dose vials contain thimerosal to safeguard against contamination of the vial. Most single-dose vials and pre-filled syringes of flu shot and the nasal spray flu vaccine do not contain a preservative because they are intended to be used once. read more

According to an FDA study, Thimerosal in Vaccines, the typical flu vaccine is either mercury free or has up to 50 micrograms of thimerosal which breaks down to ethylmercury. read more

50,000 ppb Mercury = Concentration of mercury in multi-dose DTaP and Haemophilus B vaccine vials, administered 4 times each in the 1990's to children at 2, 4, 6, 12 and 18 months of age. 50,000 ppb Mercury = Current "preservative" level mercury in multi-dose flu (94% of supply), meningococcal and tetanus (7 and older) vaccines. read more

Most single-dose vials and pre-filled syringes of flu shot and the nasal spray flu vaccine do not contain a preservative because they are intended to be used once. A list of available flu vaccines and their thimerosal content is available. read more

Given all that, a single flu shot is about the equivalent to eating two tuna fish sandwiches in terms of initial exposure. However, in terms of overall exposure including time for the mercury to be flushed from your body, one flu shot is equivalent to a couple bites of a tuna fish sandwich. read more

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