What is a thread virus?

A thread virus is a virus that resembles a string or thread because it abnormal long shape, sometimes they may be curled up into a sort of circular form to resemble a normal virus cell. The Latin term for thread virus is filovirus, this is a family of viruses that includes Ebola Zaire, Ebola Sudan, Marburg, and a few others. These viruses are relatively incurable. The worst of the thread viruses is Ebola Zaire which is called the "Slate wiper" because the Death Rate for humans is 9/10. A New York Times best seller "The Hot Zone" by Richard Preston was published 1995 to create awareness towards these threatening viruses.