Table 3. Alpha Toxin yields and clinical outcome (veterinary isolates excluded).

	Testedisolates	Mean(ng/ml)	Median(ng/ml)	Range(ng/ml)			Standarddeviation (ng/ml)
All cases	428	5.55	0.5	0.0	…	72.8	10.1
Fatal cases	34	3.01	0.2	0.0	…	19.2	4.8
Surviving; or outcome not recorded	394	5.77	0.5	0.0	…	72.8	10.4