Because I know you wanted an update…

authorities say the woman likely swallowed anthrax spores propelled into the air by vigorous drumming.

via N.H. Drum Circle Anthrax Victim Improving, Investigation Continues – Infectious Disease –

“Vigorous drumming” is really what is to blame, here.  Anyone who has ever met a drummer knows that, over time, vigorous drumming can lead to irreparable “slowing” of higher level brain functions.  Evidenced by inability to read, keep time, or carry on what would be considered a normal conversation.

Animal hides are a red herring.  Vigorous drumming should be investigated and prosecuted to the full extent of the law.