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Table 1 Dates of visit, attack rates and laboratory-confirmed cases by groups, hotel X, Norway, March 2007

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

Group

Dates of visit

Response rate %

Attack rate %

Number of laboratory-

confirmed cases

Group A

12–16

65 (11/17)

0 (0/11)

0

Group B

15–16

38 (17/45)

12 (2/17)

0

Group C

16–18

75 (33/44)

67 (22*/33)

9

Group D

16–18

71 (10/14)

10 (1/10)

1

Group E

20–22

58 (7/12)

0 (0/7)

0

Group F

21–22

40 (4/10)

0 (0/4)

0

Group G

21–23

44 (7/16)

0 (0/7)

0

Total

 

56 (89/158)

28 (25/89)

10

  1. * Of these 22, 14 were Swedish