Table 4. Comparison among outbreaks, 2001–2005, Germany*.

Characteristic	Linked to notifiable pathogens	Linked to nonnotifiable pathogens	No link to any specific pathogen
No. outbreaks	30,578	155	772
Median duration, d	3	9	4
Median no. cases per outbreak (minimum, maximum)	3 (2,527)	8 (2,153)	10 (2,110)
Median duration from report of first case until outbreak report filed at local health department, d	26,597	154	772
Median duration between filing of outbreak report at local health department until arrival of report at RKI, d	1	0	0
Median duration from report of first case until outbreak report arrives at RKI, d	2	2	3

*RKI, Robert Koch Institute.