Itzy Bitzy Spider

Found this gem - now I reckon this could be why a certain person would not discuss this in detail. Might be part of a clinical trial...

"On my lower leg, if you must know, and that's the end of the prognosis."
* Foreign Minister Winston Peters says where he was bitten by an insect before coming down with a mysterious disease and denying rumours he sat on a spider."

Didn't he recently go to Argentina? Isn't that very close to Brazil???