TABLE 5.

Recurrent episodes of CDAD related to PCR ribotype and place of onset of disease during 12 months in Örebro county

Recurrence PCR ribotypea	No. of patients	No. of patients with the following no. of recurrences					No. of episodesb
		1	2	3	4	5	Hospital	Community	Relapse	Reinfection	Total
SE 1	2	2					2		2		2
SE 7	1	1	1	1			4		4		4
SE 7b	2	2	2				4		4		4
SE 11	1	1	1				2		2		2
SE 12	4	4	3	2			9		8	1	9
SE 14	1	1	1				1	1	2		2
SE 16d	1	1	1				2		2		2
SE 17	8	8	7	3	1	1	20		19	1	20
SE 19	2	2					1	1	1	1	2
SE 20	4	4	2	2			8		6	2	8
SE 21	4	4	1	1			4	2	5	1	6
SE 21b	4	4					2	2	3	1	4
SE 22c	1	1	1				2	2	2		2
SE 23a	1	1	1					2	2		2
SE 25	4	4	1	1			4	2	6		6
SE 26	2	2					2		2		2
SE 41	1	1	1					2	2		2
Sporadicc	10	10					8	2	8	2	10
Total	53	53	23	10	1	1	75	14	80d	9	89

^aCurrent Swedish designations; see Materials and Methods and Tables 2 and 3.

^bSee Materials and Methods and Fig. 1 for definitions. Hospital, hospital-associated CDAD; Community, community-acquired CDAD; Relapse, recurrence due to a PCR ribotype identical to that of the initial or previous episode; Reinfection, recurrence due to a new PCR ribotype.

^cPCR ribotypes associated with only one recurrence.

^dApparent relapse rate, 90% (80 of 89 episodes).