The highly destructive white spot virus has again been detected in supermarket prawns despite tightened import restrictions were introduced after a disease outbreak across south-east Queensland farming industry.

The results came as a Four Corners investigation also revealed how some seafood importers were deliberately evading Australia’s bio security defences.  

Testing conducted for the program found traces of the virus present in 30 percent of prawn samples purchased from a range of supermarket outlets in the south-east Queensland area.