Why does she have to do autopsies very quickly in Ebola cases?

Even dead bodies are live with the virus. Every tissue will have Ebola in it. Nancy needs to minimize her exposure to it.

Nancy has to perform autopsies quickly because the Ebola virus destroys the animal's internal organs and the carcass begins to deteriorate instantaneously after death.And the tissues are softened, so quickly dissecting the animals is ideal to avoid the liquefaction (PAGE 60)