New Vaccine Production Could Improve Flu Shot Accuracy

For decades, vaccine manufacturers have used chicken eggs to grow the flu virus strains included in the seasonal flu shot. But because these human strains frequently mutate to adapt to their new environment in eggs, the resulting vaccine is often an imperfect match to the actual virus that it is supposed to protect against. Duke researchers have devised a way to keep the human influenza virus from mutating during production, generating a perfect match to the target vaccine in a shorter time frame.
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