TABLE 1.

Frequency distribution of the geographic origin of isolates of the Hannover P. aeruginosa strain collection from independent habitats

Habitat	Frequency (%)
	Germany	Other European countries	Non-European countries
Total (all habitats)	64	22	14
Inanimate environment	74	6	20
Acute infection	30	63	7
Chronic airway infection	74	12	14