Investigation of Swedish cases reveals an outbreak of cryptosporidiosis at a Norwegian hotel with possible links to in-house water systems

Table 4 Percentage of persons exposed to selected variables in four groups, hotel X, Norway, March 2007

	Percentage of persons exposed^‡ per group
Exposure	Group A	Group B	Group C	Group D
Ice cubes in the bar	25	10	88	18
Drinking water bottled at hotel	75	70	64	18
Water from hotel dispenser^†	56	100	73	73
Bottled water (commercial)	44	30	67	55
Tap water	63	60	71	20
Water as usual drink at meals	100	100	85	70
Broccoli soup*	80	100	85	78
Beef filet au gratin*	80	90	88	89
Grilled polenta*	87	80	75	78
Baked apple*	93	100	85	44
Zabaglione sauce*	80	100	61	67

‡ Answered "yes" or "possibly" consumed; † Different water dispensers were used by different groups
* Part of menu on 16 March

ISSN: 1471-2334