Tick-borne bacterial pathogens in southwestern Finland

Parasites & Vectors

Table 2 Tick density estimates and the number of positive samples in each locality in this study

Study locality	Tick density (ticks/100 m²)	Tick density (ticks/100 m²) without larvae	Tick density in 2000 (ticks/100 m²)^{d, e}	B. burgdorferi (s.l.) prevalence^f		B. burdorferi (s.l.) prevalence in 2000^d
				Samples	Positive (%)	Samples	Positive (%)
Boskär	406.0^g	36.0	7.3	160	47 (29.4)	272	13 (4.8)
Berghamn	22.0	8.3	0.93	20	1 (5.0)	66	0 (0)
Seili	27.4	5.6	0.28	722	126 (17.5)	69	8 (11.6)
Pähkinäinen	28.3	9.6	0.82	88	18 (20.5)	22	2 (9.1)
Maisaari	2.0	1.6	0.06	18	4 (22.2)	2	0
Vepsä	1.81	1.4	0.2	9	2 (22.2)	8	0
Hirvensalo	2.22	2.0	0.01	9	1 (11.1)	1	0
Ruissalo	0.6	0.6	0.23	10	0	14	0
Samppalinna	0	0	0	0	-	0	-
Urheilupuisto	0	0	0	0	-	0	-
Coastal line^a	2.0	1.9	n/a	27	4 (14.8)	n/a
Northern line^b	0.13	0.13	n/a	3	0	n/a
Northwestern line^c	0	0	n/a	0	-	n/a

^aCoastal line: Askainen, Kustavi, Lokalahti, Pyhämaa, Pyhäranta
^bNorthern line: Nousiainen, Mynämäki, Laitila, Eurajoki, Luvia
^cNorthwestern line: Alastaro, Matku, Mellilä, Marttila, Paimio
^dData from Mäkinen et al. [54]
^eTick densities measured for nymphs and adults in 2000
^fPrevalence measured for nymphs and adults together, as in Mäkinen et al. [54]
^gIn Boskär, larval densities were approximated due to extremely high numbers of larvae (occasionally 500–600 larvae per 50 m drag)

ISSN: 1756-3305