Clostridium perfringens
"Acinetobacter anitratus", "Acinetobacter calcoaceticus", "Actinomyces odontolyticus", "Aeromonas hydrophila", "Bacteroides distasonis", "Bacteroides uniformis", and "Clostridium perfringens" are generally susceptible to imipenem, while "Acinetobacter baumannii, some Acinetobacter" spp., "Bacteroides fragilis", and "Enterococcus faecalis" have developed resistance to imipenem to varying degrees. Not many species are resistant to imipenem except "Pseudomonas aeruginosa" (Oman) and "Stenotrophomonas maltophilia".