Other potential and threatening diseases include rabbit haemorrhagic disease in New Zealand and flystrike.

Rabbit haemorrhagic disease escaped containment from an Australian Government research facility and spread across Australia.

In 2000 Spanish researchers investigated a genetically modified virus which might have protected rabbits in the wild against myxomatosis and rabbit haemorrhagic disease.

Rabbit numbers dropped after the introduction of rabbit haemorrhagic disease virus (RCD) but are now increasing.

Rabbits were formerly a major pest, but numbers have decreased following control measures such as warren ripping and the dissemination of Rabbit Haemorrhagic Disease.

Cooke, B.D. Rabbit Haemorrhagic Disease: Field epidemiology and the management of wild rabbit populations.

After the illegal introduction of rabbit haemorrhagic disease (RCD) into New Zealand rabbit numbers were reduced dramatically for a period of time.

In March 1995 trials started on Wardang Island of the rabbit calicivirus causing rabbit haemorrhagic disease (RHD).

In Spain and Portugal, by 2005 rabbits had declined by as much as 95% over 50 years due diseases such as myxomatosis, rabbit haemorrhagic disease and other causes.

The rabbit haemorrhagic disease virus, which causes rabbit haemorrhagic disease, has been cleared as a safe form of biological control agent against the European rabbit in Australia.

The infectious agent responsible for the disease is rabbit haemorrhagic disease virus (RHDV), or rabbit calicivirus (RCV), genus Lagovirus of the family Caliciviridae.

However, because rabbit haemorrhagic disease killed a large part of the Australian rabbit population at the end of the 20th century, it is suspected that the primary prey of the dogs has changed in the affected areas.

These include pathogens that also affect other animals and/or humans, such as Bordetella bronchiseptica and Escherichia coli, as well as diseases unique to rabbits such as rabbit haemorrhagic disease and myxomatosis.

To combat this trend, Commonwealth Scientific and Industrial Research Organisation (CSIRO) comprehensively tested, over three years from June 1991, the release of calicivirus to cause rabbit haemorrhagic disease (RHD).

A viral biological control which can be introduced in order to control the overpopulation of European rabbit in Australia is the rabbit haemorrhagic disease virus that causes the rabbit haemorrhagic disease.