Scotland's salmon industry has been hit by the first case of infectious salmon anaemia virus since 1999, at a farm in Shetland.

Inspectors have stressed there is no clinical outbreak as yet, but Fisheries Research Services began rolling out control procedures on Monday following the discovery of the virus, which is specific to fish and poses no risk to humans.

"We have an internationally recognised record in fish health and welfare and it is important we get back on track quickly," said Scottish Salmon Producers' Organisation CEO Scott Landsburgh.