Successful implementation of infection control measure in a neonatal intensive care unit to combat the spread of pathogenic multidrug resistant Staphylococcus capitis

Table 2 Epidemiological characteristics of preterm infants infected/colonized with Staphylococcus spp. in Neonatal Intensive Care Unit at Nîmes University Hospital

Characteristics	Period 1^a	Period 2	Period 3	Period 4	Period 1 & Period 3	Period 2 & Period 4	p
Characteristics	Dec 12-Apr 15	May 15-Nov 16	Dec 16-Feb 17	Mar 17-Dec 17	Period 1 & Period 3	Period 2 & Period 4	p
Number of microorganisms isolated	1033	598	103	330	1136	928
Mean of microorganisms isolated per month	36.9 (12–59)	31.3 (19–44)	34.3 (26–36)	33.0 (28–59)	35.6	32.2	ns
Number of S. aureus isolated	48	31	5	17	53	54
Mean of S. aureus isolated per month	1.7 (0–5)	1.6 (0–5)	1.7 (0–4)	1.7 (0–4)	1.7	1.7	ns
Number of CoNS^a isolated	527	230	44	138	591	368
Mean of CoNS isolated per month	18.8 (7–41)	12.1 (14–33)	14.7 (13–17)	13.8 (10–24)	16.8	12.95	ns

^aCoNS, Coagulase negative Staphylococcus; ns, not significant corresponding to comparison of incidences between different periods (Period 1, Period 2, Period 3 and Period 4) using Fisher’s exact test

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