The searches I’ve done suggest the known nests were eradicated. I understand there’s a good chance there were probably a few went unnoticed, but i have my hopes.
Look I want to be optimistic too, but as far as species traveling between continents... it is often hard to put the genie back in the bottle. At the end of the day, either they are well adapted here, or they are not.
On the bright side they're huge and terrifying, so they probably won't stay under the radar anywhere around people. Almost anybody who notices these will try to track them down and kill them.