Asherons Call: Another Global - Has Anyone Figured this Out Yet?

From Jon the Mighty of Wintersebb:

[/i]Near Kara an Olthoi Matron stalks the land. Her brood swarms about her and makes their way toward the settlements of the area.[/i]

See, now this just doesn't seem like a good thing to me. Do we know how to rid ourselves of them yet? I've seen lots of speculation...