CAMP-like phenomena of Vibrios.

The CAMP test was proposed by Lesmana and Rockhill (11) as a method to differentiate between classical V. cholerae (negative) and V. cholerae biotype El Tor (positive). Typical CAMP phenomena with a crescent-like zone of complete hemolysis were observed also with some strains of V. metschnikovii, V. parahaemolyticus, and V. anguillarum when the cultures were incubated anaerobically (mostly also at aerobic conditions). No CAMP reaction was seen with V. harveyi and V. costicola.