Prevalence and Diversity among Anaplasma phagocytophilum Strains Originating from Ixodes ricinus Ticks from Northwest Norway

Table 1

Statistical analysis of the infection rates in nymphs and adult female ticks.

A. phagocytophilum infection rates in 2010, 2011, and 2012
	Not infected	Infected	Total	Chi-Square	P value	p
2010
Nymph	514	15	529	0,000	1.000	0,01
Adult	69	2	71
Total	583	17	600
2011
Nymph	521	17	538	0,420	0.711	0,01
Adult	62	3	65
Total	583	20	603
2012
Nymph	523	17	540	0,003	1.000	0,01
Adult	59	2	61
Total	582	19	601