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Table 5 Relative risks of developing systemic symptoms correlated to various risk factors.

From: Small risk of developing symptomatic tick-borne diseases following a tick bite in the Netherlands

  Exposed individuals Systemic symptoms Relative risk (95% CI) P value
>24 h 30/193 4/30 5.43 (1.44 - 20.54)* 0.0215*
Borrelia 43/190 2/43 1.14 (0.24 - 5.44) 1
Rickettsia 41/190 3/41 2.18 (0.54 - 8.75) 0.3729
Ehrlichia 27/182 2/27 2.30 (0.47 - 11.24) 0.2779
Babesia 26/190 1/26 0.90 (0.12 - 7.03) 1
Any infection 98/190 5/98 1.56 (0.38 - 6.36) 0.7218