The truck driver entered WA on September 16, WA Health Minister Roger Cook announced on Wednesday.
The driver was tested on September 13 in NSW and had a negative result, said Cook.
The truckie and his passenger then drove into WA on September 16 at around 1.30 a.m. and passed the borders of SA and WA.
On September 19, the truck driver, who had a COVID Had received a positive vaccine on his return to NSW.
WA Police Commissioner Chris Dawson said there was no foreseeable reason why the AFL Grand Final would not be held at Optus Stadium on Saturday.
“There are no changes planned with regard to the course of the game or other conditions,” he said.
According to the current health information, the decision maker between Melbourne and the Western Bulldogs in front of 60,000 people “everything is going as planned”.