Microbiology
Significant differences were seen in this study between the pathogens of the SCG and that of MCG. F. necrophorum was more commonly associated with MCG (representing 71% of the positive cultures reported in these patients) while S. pneumoniae was isolated only in patients with SCG. The high rates of F. necrophorum in our study are similar to those reported by Stern-Shavit et al .(9) and describing a significant increase in the role of F. necrophorum in the pathophysiology of CAM. In this retrospective study conducted between the years 2008-2017, 570 cases of AM were investigated. A significant rise in the role of F. necrophorum in the pathophysiology of CAM was recorded (F. necrophorum isolated in half of the cases). However, in their study, PCR was used for detecting additional pathogens in initially negative MEF cultures, while PCR was not routinely used in our institution during the study period.