he role of Aeromonas spp. in causing disease in humans is perhaps the most controversial one, especially when it comes to the digestive tract illnesses such as diarrhoea. Current evidence for Aeromonas being a human pathogen focuses not just on gastrointestinal illnesses but also other infections that Aeromonas isolates have been associated with including injury or wound infections, nosocomial infections, septicaemia, respiratory tract infections and peritonitis.