Australia's strict biosecurity laws also make it difficult to import poultry, leaving Ingham's in a strong position.

But there were strict biosecurity measures in place on the farms to ensure the virus didn't spread, he said.

The NRL announced five figures in the game have been issued breach notices for breaking the sport's strict biosecurity protocols.

Further, it's a credit to the understanding and willingness of authorities and participants to implement and adhere to strict biosecurity measures.

However, the league back-tracked when it emerged that the vaccination was not required for players to meet the strict biosecurity protocols.

The deaths were found to be partly due to the two bacteria and MPI placed strict biosecurity controls on King Salmon.

Ecuador's minister of production and foreign trade, Ivan Ontaneda, who also oversees the fishing industry, said the country's shrimp producers follow strict biosecurity protocols.

The common denominators of all successful control programs were systematic control, removal of PI animals, movement controls for infected herds, strict biosecurity, and surveillance.

Wayne Bennett's partner has lashed out at one of his critics after the NRL coach was found guilty of breaching the league's strict biosecurity rules.

Channel 7 reporter Chris Garry revealed the 45-year-old had broken the NRL's strict biosecurity measures to deal with a "family emergency".

Reports emerged earlier this month that Pangai-Junior's $650,000-a-year contract at Red Hill would be ripped up after he broke the NRL's strict biosecurity protocols.

Pangai Jr copped a mammoth $30,000 fine and was stood down by the NRL for breaching the NRL's strict biosecurity protocols earlier this month.

Strict biosecurity measures have been hog producers' first line of defense against the virus.