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What are the coronavirus mRNA vaccines and how do they work?

As vaccines against Covid-19, the disease caused by the new coronavirus, are rolled out around the world, their effectiveness depends largely on public trust about their safety.Two of the vaccines available under emergency use conditions in some countries use a relatively new technology based on the genetic code of the virus. They are the mRNA vaccines produced by Pfizer/BioNTech and Moderna.While scientists are confident of their safety in the short term, any long-term side effects are unknown…

Read the original article at South China Morning Post

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