Seasonal patterns and spatial variation of Borrelia burgdorferi (sensu lato) infections in Ixodes ricinus in the Netherlands

Hartemink, Nienke; van Vliet, Arnold J. H.; Gort, Gerrit; Gassner, Fedor; Jacobs, Frans; Fonville, Manoj; Takken, Willem; Sprong, Hein

doi:10.1186/s13071-021-04607-7

Table 4 Total DON, NIP and DIN per 200 m², per month and per location

From: Seasonal patterns and spatial variation of Borrelia burgdorferi (sensu lato) infections in Ixodes ricinus in the Netherlands

Location	Variable	January	February	March	April	May	June	July	August	September	October	November	December
Bilthoven	DON	0	3	8	57	80	184	113	127	59	64	24	2
	NIP	NA	0.00	0.13	0.07	0.14	0.13	0.12	0.13	0.14	0.08	0.04	0.00
	DIN	NA	0	1	4	11	23	13	17	8	5	1	0
Dronten	DON	0	0	5	112	126	143	118	94	97	89	49	0
	NIP	NA	NA	0.00	0.30	0.19	0.33	0.26	0.31	0.36	0.34	0.29	0.00
	DIN	NA	NA	0	33	23	47	31	29	35	31	14	0
Ede	DON	9	11	83	351	476	549	220	262	165	111	51	12
	NIP	0.22	0.00	0.09	0.13	0.11	0.14	0.12	0.18	0.17	0.18	0.10	0.09
	DIN	2	0	7	44	55	78	27	48	28	19	5	1
Gieten	DON	10	3	60	253	418	965	1039	828	688	406	91	10
	NIP	0.00	0.33	0.10	0.10	0.12	0.13	0.19	0.12	0.12	0.13	0.08	0.10
	DIN	0	1	6	25	52	124	197	96	81	51	7	1
Hoog Baarlo	DON	7	3	23	281	475	597	264	347	205	97	55	4
	NIP	0.00	0.00	0.07	0.04	0.07	0.06	0.06	0.09	0.04	0.03	0.09	0.00
	DIN	0	0	2	12	33	35	17	32	8	3	5	0
Kwade Hoek	DON	0	0	0	14	80	56	11	4	0	5	6	0
	NIP	NA	NA	NA	0.21	0.27	0.30	0.18	0.00	NA	0.00	0.00	NA
	DIN	NA	NA	NA	3	21	17	2	0	NA	0	0	NA
Montferland	DON	2	15	56	446	478	670	414	224	142	139	76	9
	NIP	0.00	0.07	0.15	0.14	0.11	0.15	0.17	0.18	0.14	0.12	0.14	0.00
	DIN	0	1	8	62	54	102	72	41	20	16	11	0
Schiermonnikoog	DON	1	3	7	41	53	91	56	24	15	18	7	6
	NIP	0.00	0.00	0.00	0.15	0.19	0.15	0.16	0.13	0.13	0.22	0.00	0.20
	DIN	0	0	0	6	10	13	9	3	2	4	0	1
Twiske	DON	10	8	34	344	602	831	112	27	43	61	77	8
	NIP	NA	0.25	0.18	0.10	0.11	0.13	0.14	0.09	0.12	0.15	0.19	0.13
	DIN	NA	2	6	34	67	107	16	3	5	9	14	1
Vaals	DON	1	3	17	81	124	121	120	101	67	47	24	3
	NIP	0.00	0.00	0.12	0.03	0.12	0.08	0.14	0.17	0.08	0.16	0.04	0.33
	DIN	0	0	2	2	15	10	16	18	5	7	1	1
Veldhoven	DON	26	56	230	890	1171	859	419	247	294	213	169	16
	NIP	0.27	0.21	0.11	0.15	0.15	0.18	0.17	0.13	0.17	0.17	0.19	0.12
	DIN	7	12	26	135	179	158	70	32	50	36	33	2
Wassenaar	DON	12	10	119	841	844	823	576	410	356	408	162	24
	NIP	0.33	0.33	0.08	0.17	0.15	0.24	0.18	0.26	0.27	0.19	0.17	0.12
	DIN	4	3	10	141	130	201	105	105	98	79	28	3
All Locations	DON	78	115	642	3711	4927	5889	3462	2695	2131	1658	791	94
	NIP	0.19	0.16	0.11	0.13	0.13	0.16	0.16	0.17	0.16	0.16	0.15	0.11
	DIN	13	19	68	503	650	916	576	424	340	261	119	10

Total number of nymphs (DON), average prevalence (NIP) and estimated number of infected nymphs (DIN) per month and location (over 200 m and over 7.5 years). Prevalence (NIP) is calculated for each month–location combination by dividing the total number of infected nymphs captured in a certain month (over several years) by the total number of tested nymphs. DON is the sum of all nymphs captured in that month (over 7.5 years) and DIN is the (rounded-off) product of DON × NIP

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ISSN: 1756-3305

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