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Vaccines using modified mRNA, including those used against the coronavirus in the pandemic, can lead to the formation of unwanted proteins but only to a very small extent, according to a study. There is no evidence that the production of unwanted proteins in coronavirus vaccines used so far has had any negative effects, write researchers led by Anne Willis from the University of Oxford in the journal Nature. Nevertheless, the phenomenon should be avoided in future vaccines, as it could potentially also lead to negative effects such as reduced efficacy or side effects. German experts also saw n…

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