Not a virus- it is a bacteria. Every animal has bacteria present, so it is irrelevant, their reasoning was that it was not already present in NZ- but it was. Dodgy all round really.
Google search MAF, Iguana, New Zealand....interesting reading and good to see how our tax dollars are used, especially after MAF waited until people bought them to declare them illegal- no warnings or anything. If they made the call right away then no problem, but they waited, and waited, and waited. You pay peanuts.....