NPR

Hep C has a secret strategy to evade the immune system. And now we know what it is

How does the hepatitis C virus keep the immune system at bay? A scientist finds the answer — and it involves a standard technique used by villains.
An image of the hepatitis C virus Image made from a transmission electron microscopy. The virus is adept at evading the immune system.

How do viruses do their job of infecting humans? Some of them are experts at evading the immune system so that it won't knock them out.

Take hepatitis C, a sneaky and potentially deadly viral infection of the liver that is transmitted by contact with human blood – for example, through needles, sex and childbirth.

Scientists have known for a long time that hep C can hide from our immune system. While the immune system might

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