No it doesn’t. It says :And this article says they were required to be rescreened. Also, as noted by @Rangalad there were several flights from regional airports without screening facilities that were misdirected into the screened area.
Which implies that once out of the secure area you would not be screened again unless requiring to return to that area.As a precaution, all passengers on QF487 were escorted from the aircraft when it landed in Melbourne and taken through the screened part of the airport into the unscreened area –