Article: Rabies: a growing threat. (includes related article)

On November 29, 1994, Rolando Barian of Edinburg, Texas, died of rabies. He was bitten by a dog. The rabies virus was most likely transferred from a coyote to the dog, because coyotes are the main carriers of rabies in Texas. Rabies is not just a problem in Texas, however. Animal rabies is on the rise all over the country.

Rabies is a disease caused by a virus. A virus is a tiny organism that uses healthy cells to survive and multiply. Under a powerful electron microscope, the rabies virus looks bullet-shaped with little spikes. Although the virus is only a fraction of the size of the head of a pin, it is powerful enough to kill an animal left untreated.

Why ...

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