Bacteriology of snakebite abscess

Thirty-eight cases of abscess secondary to pit viper envenomation are reviewed. The incidence of abscess formation was 9%. Results of aerobic cultures revealed growth of enteric, coliform organisms in 22 of 25 isolates obtained from previously unopened abscesses. Clinical evidence for co-existent anaerobic infection is presented. No cases of tetanus were encountered. Clinical and laboratory findings of patients in the study are correlated with a review of bacteriologic investigations of the oral flora of venomous snakes. Use of antibiotics effective against aerobic coliforms and histotoxic anaerobic organisms for prophylaxis and/or treatment of infectious complications of pit viper envenomation are recommended.