Talk:Mutalist Alad V/@comment-37.4.198.204-20141127211219/@comment-10763492-20141128005830

It says so in the patchnote, actually: "Find Mutalist Beacons through Infestation Outbreak rewards."

Source: [http:// https://forums.warframe.com/index.php?/topic/352963-mesa-update/]