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Table 4 Attachment duration (> 24 hours) of adult female ticks and nymphs of I. ricinus with respect to age classes of the human hosts

From: Ixodes ricinus ticks removed from humans in Northern Europe: seasonal pattern of infestation, attachment sites and duration of feeding

Age class(years) Total no. (%) of participants Adult femalesa Nymphsa
No. % > 24 h No. % > 24 h
19-29 31 (2) 7 57 20 55
30-39 100 (6) 17 76 76 46
40-49 192 (11) 56 61 127 54
50-59 398 (22) 93 60 303 58
60-69 621 (35) 135 61 469 64
70-79 351 (20) 77 58 253 72
>80 77 (4) 25 84 52 75
Total 1770 (100) 410 62 1300 63
  1. aRemoved adult female ticks and nymphs where calculation of tick attachment time was possible.