Table 3.

Bacterial pathogens isolated from intraoperative samples of PJI in 106 patients

Microorganism	Number of strains (% of the total)	Cultured at day (D)
Gram-positive cocci	151 (75,9)	D0-D5
Staphylococci	107 (53,8)
Staphylococcus aureus	44 (22,1)
MSSA	41 (20,6)	D0-D1
MRSA	3 (1,5)	D0-D1
CoNS	63 (31,7)
Staphylococcus epidermidis	38 (19,1)	D0-D4
Staphylococcus capitis	10 (5,0)	D1-D3
Staphylococcus caprae	4 (2,0)	D1-D2
Staphylococcus haemolyticus	2 (1,0)	D2
Staphylococcus lugdunensis	6 (3,0)	D1-D5
Staphylococcus pettenkoferi	2 (1,0)	D1
Staphylococcus warneri	1 (0,5)	D4
Streptococcus spp.	27 (13,6)
Streptococcus adiacens	2 (1,0)	D2-D4
Streptococcus anginosus	1 (0,5)	D1
Streptococcus agalactiae	9 (4,5)	D0-D2
Streptococcus dysgalactiae	3 (1,5)	D0
Streptococcus gallolyticus	2 (1,0)	D0
Streptococcus gordonii	2 (1,0)	D1-D10
Streptococcus mitis/oralis	3 (1,5)	D0-D1
Streptococcus pneumoniae	2 (1,0)	D1
Streptococcus parasanguinis	1 (0,5)	D1
Streptococcus sanguinis	1 (0,5)	D1
Streptococcus vestibularis	1 (0,5)	D1
Enterococci	17 (8,5)
Enterococcus faecalis	15 (7,5)	D0-D3
Enterococcus raffinosus	2 (1,0)	D1
Gram-negative bacilli	29 (14,6)	D0-D1
Enterobacteriales	25 (12,6)
Citrobacter freundii	1 (0,5)	D0
Citrobacter koseri	1 (0,5)	D0
Enterobacter cloacae	4 (2,0)	D0-D1
Escherichia coli	7 (3,5)	D0-D1
Klebsiella oxytoca	1 (0,5)	D0
Klebsiella pneumoniae	4 (2,0)	D0-D1
Morganella morganii	1 (0,5)	D1
Proteus mirabilis	5 (2,5)	D1
Serratia marcescens	1 (0,5)	D1
Non-fermenting bacilli	4 (2,0)
Pseudomonas aeruginosa	3 (1,5)	D0-D1
Acinetobacter baumannii	1 (0,5)	D1
Anaerobes	11 (5,5)	D0-D14
Cutibacterium acnes	8 (4,0)	D5-D14
Cutibacterium avidum	1 (0,5)	D6
Clostridioides perfringens	1 (0,5)	D0
Bacteroides thetaiotaomicron	1 (0,5)	D1
Others	8 (4,0)	D0-D5
Bacillus cereus	2 (1,0)	D0
Bacillus pumilus	1 (0,5)	D5
Corynebacterium striatum	1 (0,5)	D1
Micrococcus luteus	2 (1,0)	D2
Yeast	2 (1,0)	D2
Total number of strains	199 (100)