Airplane passenger bites his seatmate, then dies

Airplane passenger bites his seatmate, then dies

And 28 days later…?
Over the weekend, many were treated to a headline straight out of a zombie apocalypse movie: a 24 year-old Brazilian man on an Aer Lingus flight to Dublin bit a fellow passenger, then keeled over dead.
 
Autopsy reports - which I'm sure have not been faked in order to keep the public calm - showed that the man had swallowed eighty pellets of cocaine (10 grams of coke each) and that at least one of them ruptured in his stomach.
 
It's still unclear why the Brazilian man bit his seat mate, and the Irish police have detained another passenger without comment on her connection to the dead Brazilian man.
 
Also no word on the passenger who was bitten. I'm sure they were treated for a minor bite and released into the public. Where surely they will not cause the spread of the zombie virus into the general public, right? RIGHT?