Therefore, it is not economically viable to try to control them, the exception being when they infect perennial species, such as fruit trees.

Other viruses, such as rabies virus, can infect different species of mammals and are said to have a broad range.

Put together and you get cross-species therefore it can infect species that are not it's normal host species.

The Flood want to escape Halo and infect other species.

It infects several species of nut trees.

Coronaviruses, he added, "are ubiquitous and are relatively promiscuous" in their ability to infect different species.

These viruses are known to infect vertebrate species, including pigs and birds such as pigeons and ducks.

But if disaster happens, he says: "People will look back and say: 'This was a nasty virus that you knew could sometimes infect other species.

But if it infects several species of animal it may survive, as cowpox does.

Viruses of the family Adenoviridae infect various species of vertebrates, including humans.