You can get from multiple people within the same session (Destiny)

by ZackDark @, Not behind you. NO! Don't look., Friday, September 16, 2016, 21:14 (2075 days ago) @ Kahzgul

The dude that got 5 of them did it like that. He arranged a Private Match with all the Mites spread out across multiple Guardians and managed to kill/revive/whatever all of them in a way to get all 5 infections.

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