Prevalence of antibodies against Ehrlichia spp. and Orientia tsutsugamushi in small mammals around harbors in Taiwan

Table 4 Trends of rates of seropositivity of antibodies against Ehrlichia spp. (EHR) and Orientia tsutsugamushi (STG) in small mammals in northern, central, southern, and eastern Taiwan from November 2004 to December 2008

	2004 (N = 11)		2005 (N = 439)		2006 (N = 391)		2007 (N = 278)		2008 (N = 529)			(trend)
Variable	N	%	N	%	N	%	N	%	N	%	p value	p value
EHR
Northern	0	0	2	0.46	16	2.81	12	4.32	14	0.95	0.0054	0.8555
Central	0	0	2	0.46	4	1.02	0	0.00	0	0.00	0.1908	0.3183
Southern	0	0	0	0.00	3	0.77	0	0.00	1	0.19	0.0845	0.8228
Eastern	0	0	0	0.00	0	0.00	0	0.00	0	0.00	-	-
Total	0	0	4	0.91	23	5.88	12	4.32	15	2.84	0.0003	0.3306
p value			0.127		0.115		0.00007375		0.040
STG
Northern	0	0	2	0.46	6	1.02	4	0.72	11	0.95	0.9432	0.6543
Central	0	0	6	1.37	9	2.30	0	0.00	2	0.38	0.0440	0.3680
Southern	0	0	4	0.91	4	0.77	10	3.60	12	2.27	0.0016	0.0023
Eastern	0	0	1	0.23	1	0.77	2	1.44	7	2.46	0.7194	0.2352
Total	0	0	13	2.96	20	4.86	16	5.76	32	6.05	0.1183	0.0264
p value			0.245		0.005		0.008		0.167

ISSN: 1756-3305