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This Flu Shot Is Not Like the Others

TIME

This year Novartis shipped its first full batch of Flucelvax, a new vaccine that was only approved by the Food and Drug Administration in 2012. The company made a limited amount of the shot last year, but there are more doses to go around this flu season. And for the first time, the doses were made at the company’s newly approved U.S. plant in Holly Springs, North Carolina.

The vaccine is made without growing the influenza virus in chicken eggs, which is the way that flu shots were made for more than four decades. Instead, Flucelvax is grown in kidney cells from dogs. The technology means that the shot can be made in less time than a traditional flu shot—enough virus can be churned out in about 65 hours to 75 hours, compared to the six months or so it takes to grow in chicken eggs. It also means…

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