From the GoFundMe site set up for Mike Walton,

Mike “went fishing with a few friends and contracted a life threatening "flesh eating bacteria" that spread into his hand and arm. This is a very rare bacteria that has only effected 30 people historically in a state of Florida. Within 24 hours Mike was admitted to Tampa General Hospital. Doctors had informed him that it was spreading fast and he might loose his arm.”

The update posted several days ago says “Infection disease doctor said that Mike will need to be on IV with picc line for the strong antibiotics that are still needed until the 3 suspected infection are identified. The one she fears the most is the salt water strain AKA Fish Tuberculosis . The culture will take several weeks to confirm.

She has a very strong feeling that he needs to stay on IV until the cultures come back or she sees very good healing."