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Table 3 Association of symptoms and potential risk factors with tick bites and seroconversion

From: Evaluation of factors influencing tick bites and tick-borne infections: a longitudinal study

 

No tick bite (no. = 322)/tick bite (no. = 22)a, P-value

Total

Symptoms ≤ 3 month

 Fever

4/0, P = 1

4/344 = 1.2%

 Headache

59/3, P = 0.777

62/344 = 18%

 Myalgia

19/2, P = 0.634

21/344 = 6.1%

 Arthralgia

18/1, P = 1

19/344 = 5.5%

 Lymphadenitis

10/1, P = 0.522

11/344 = 3.2%

 Fatigue

1/0, P = 1

1/344 = 0.3%

 Wound, unknown cause or after insect bite

21/5, P = 0.04

26/344 = 7.6%

 Wound, black crust

4/1, P = 0.411

5/344 = 1.5%

 Red ring on the skin

7/1, P = 0.520

8/344 = 2.3%

 Rash

7/1, P = 0.520

8/344 = 2.3%

Potential risk factors

 Outdoor recreational activities

228/18, P = 0.335

246/344 = 71.5%

 Outdoor work related activities

76/9, P = 0.077

85/344 = 24.7%

 Furred pet ownership

152/14, P = 0.136

166/344 = 48.3%

 

No seroconversion (no. = 119)/seroconversion (no. = 8), P-value

 

Symptoms since last blood sample

 Fever

1/0, P = 1

1/127 = 0.8%

 Headache

8/0, P = 1

8/127 = 6.3%

 Myalgia

3/0, P = 1

3/127 = 2.4%

 Arthralgia

5/0, P = 1

5/127 = 3.9%

 Lymphadenitis

0/0

0/127

 Fatigue

6/0, P = 1

6/127 = 4.7%

 Wound, unknown cause or after insect bite

3/0, P = 1

3/127 = 2.4%

 Wound, black crust

0/0

0/127

 Red ring on the skin

0/0

0/127

 Rash

0/0

0/127

Potential risk factors

 Outdoor recreational activities

81/4, P = 0.267

85/127 = 66.9%

 Outdoor work related activities

30/1, P = 0.678

31/127 = 24.4%

 Furred pet ownership

59/3, P = 0.717

62/127 = 48.8%

 Tick bite within season

7/0, P = 1

7/127 = 5.5%

  1. aTick bite in the period before the first sample collection and in the same season