Detection of Clostridium difficile infection clusters, using the temporal scan statistic, in a community hospital in southern Ontario, Canada, 2006–2011

Table 1 Summary characteristics of 86 CDI cases, August 1, 2006 to February 28, 2011

CDI characteristics	Incidence rate of CDI (cases per 10,000 patient days)
Month¹
January	0.18
February	0.79
March	0.90
April	1.66
May	1.59
June	1.50
July	1.45
August	1.18
September	1.49
October	0.70
November	1.50
December	1.11
Year²
2006 (August – December)	2.99
2007 (January – December)	1.58
2008 (January – December)	0.42
2009 (January – December)	0.47
2010 (January – December)	1.49
2011 (January – February)	0
Season¹
Spring (April – June)	1.6
Summer (July – September)	1.4
Fall (October – December)	1.1
Winter (January – March)	0.6
Service³
Acute care	3.4
Complex care	0.5
Hospice	0
Intensive care unit	2.7
Internal medicine	2.2
Oncology	0.8
Pediatrics	0
Psychiatry	1.0
Rehabilitation	0.9
Surgery	1.6
Ward³
M1	3.4
S1	1.7
S2	1.5

CDI = Clostridium difficile infection.
¹Incidence rate presented is based on an average for that specific period.
²Incidence rate presented is the total for that specific year.
³Incidence rate presented is the total for that service or ward from August 1, 2006 to February 28, 2011.

ISSN: 1471-2334