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Adjuvants and cancer

Vaccines may be made from live, ‘attenuated’ (weakened) virus, or dead (inactivated) virus. Dead virus does not trigger such a strong response, so to improve efficacy, irritant chemicals called ‘adjuvants’ are added.

These can be a trigger of malignant cancers called sarcomas, which can lead to death within months. Injection-site sarcomas are rare, occurring at a frequency of perhaps one in 70,000 doses of vaccine, so they are certainly not a reason to avoid vaccination.

We use non-adjuvanted vaccines.