TABLE 3.

Norovirus GGI-associated gastroenteritis outbreaks occurring in Berlin, Germany

Local public health departmenta	Date of onset of outbreak (day/mo/yr)	Setting	Cases of illness
			No. (%) of residents	No. of staff membersb
BA 1	3/2/2004	Residential home	18 (6.6)	6
BA 1	12/3/2004	Residential home	16 (5.9)	6
BA 2	4/8/2004	Nursing home	12 (30)	5
BA 2	9/8/2004	Nursing home	7 (20)	5
BA 3	7/5/2004	Residential home	33 (35.5)	3
BA 3	6/4/2004	Residential home	8 (7.1)	2
BA 4	7/1/2004	Residential home	20	20

^aLocal public health departments (BA 1 to BA 4) coordinated outbreak investigations, and NV isolates were numbered and named with reference to the identifying department (Fig. 3).

^bNone was kitchen staff.