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Does the flu vaccine contain thiomersal/mercury?

Thiomersal is not an added component of the seasonal flu vaccine however it is used in the manufacturing process therefore trace amounts (<0.5 µg per dose) than may remain in the vaccine after manufacture.

Thiomersal contains Ethel-mercury which is not harmful to human health and is metabolised and removed from the body unlike methyl-mercury, which is harmful to health as it builds up in the body. Methyl-mercury is not contained in any vaccines.

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