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What is in vaccines?

April 26, 2017vaccines

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What is in vaccines?

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Vaccines contain either: • a very small dose of a live, but weakened form of a virus; • a very small dose of killed bacteria or virus or small parts of bacteria; or • a small dose of a modified toxin produced by bacteria. Vaccines may also contain either a small amount of preservative or a small amount of an antibiotic to preserve the vaccine. Some vaccines may also contain a small amount of an aluminium salt which helps produce a better immune response.