mysterious virus

The virus, called Div-1, has affected more than a quarter of shrimp in Guangdong, China's shrimp farming center, and is at risk of widespread infection, causing mass shrimp deaths.

Genetic analysis of the endangered Pacific salmon population has identified three previously unknown viruses. One of them belongs to an unknown virus group that causes disease in

It is unclear how this virus can get the spider's DNA (and some other animals), but scientists think the virus does so to make it easier to infect. .