House dust mite | Grass | Alternaria | Cat | Dog | Latex | |
Positive SPT in current workers (n (%)) (n=336) | 73 (21.8) | 84 (25.0) | 15 (4.5) | 31 (9.2) | 10 (3.0) | 20 (6.0) |
Positive SPT in ex-employees (n (%)) (n=18) | 4 (22.2) | 2 (11.1) | 0 | 0 | 1 (5.6) | 1 (5.6) |
House dust mite=Dermatophagoides pteronyssinus.