Florida Delivery Driver Hospitalized in 'Very Serious Condition' After Eastern Diamondback Rattlesnake Bite

Amazon delivery driver bitten by highly venomous Eastern Diamondback rattlesnake while delivering package in Palm City, Florida.

Driver hospitalized in "very serious condition" after being bitten above the knee.

Frantic 10-minute 911 call captures driver crying out in pain. Caller describes snake as "black and yellow" with a "big rattle."

Sheriff's office says snake bites can cause serious tissue damage, organ damage, throat swelling. Can be fatal if untreated.

19-second body cam video shows responder arriving, driver showing large, bloody wound. Driver yells out in pain when kneepad is removed.