Comparison of phenology and pathogen prevalence, including infection with the Ehrlichia muris-like (EML) agent, of Ixodes scapularis removed from soldiers in the midwestern and the northeastern United States over a 15 year period (1997-2012)

Table 2 PCR of Ixodes scapularisremoved from humans at Camp Ripley, MN, Ft. McCoy, WI and Ft. Indiantown Gap, PA for Anaplasma phagocytophilum , Babesia microti , Borrelia burgdorferi , and the Ehrlichia muris -like agent (EML)

Installation	*I. scapularis*	No. pos./no. tested (Proportion pos.)
		*A. phagocytophilum 1997-2012*	*Ba. microti 2002-2012*	*B. burgdorferi 1997-2012*	EML 2007-2012	*A.p.&Ba.m.*	*A.p.&B.b.*	*A.p.*& EML	*Ba.m.&B.b.*	*B.b.*& EML	*A.p., Ba.m.&B.b.*	*Ba.m., B.b.*& EML	Total co-infected
Camp Ripley	Adults	49/419 (11.7%)a	6/242 (2.5%)	157/419 (37.5%)a	7/93 (7.5%)a	1/242 (0.4%)	20/419 (5%)	1/93 (1%)	1/242 (0.4%)	3/93 (3%)	1/242 (0.4%)	0	27/419 (6.4%)a
	Nymphs	26/348 (7.5%)c	7/215 (3.3%)c	90/348 (25.9%)	2/103 (1.9%)	0	12/348 (3.5%)	0	4/215 (2%)	2/103 (2%)	0	0	18/348 (5.2%)c
Ft. McCoy	Adults	7/201 (3.5%)b	1/175 (0.6%)	52/201 (25.9%)b	2/96 (2.1%)	0	6/201 (3%)	0	0	1/96 (1%)	0	1/96 (1%)	8/201 (4.0%)a
	Nymphs	18/480 (3.8%)	1/454 (0.2%)d	95/480 (19.8%)	0/269 (0.0%)	0	5/480 (1%)	0	0	0	0	0	5/480 (1%)d
Ft. Indiantown Gap	Adults	1/233 (0.4%)b	0/215 (0.0%)	82/233 (35.2%)	0/129 (0.0%)b	0	0	0	0	0	0	0	0%b
	Nymphs	5/300 (1.7%)d	0/271 (0.0%)d	59/300 (19.7%)	0/123 (0.0%)	0	0	0	0	0	0	0	0%d

Significant differences among locations are noted with superscript letters; a and b denote differences among adults, c and d denote differences among nymphs. Proportions in each column sharing different.
Superscripts were significantly different (p < 0.017). Those proportions in each column wth the same superscript were not significantly different. The absence of a superscript indicates no significant difference.
A.p., Anaplasma phagocytophilum; Ba.m., Babesia microti; B.b., Borrelia burgdorferi; EML, Ehrlichia muris-like agent.

ISSN: 1756-3305