Table 1.

Registered cases, deaths, and case-fatality rates of Rocky Mountain spotted fever and spotted fever group Rickettsia in selected states of the northern border of Mexico and the northern region by year of occurrence, 2009–2023

Year	Baja California*		Coahuila†		Chihuahua‡		Nuevo Leon§		Sonora‖		Northern Region
	Cases	Deaths	Cases	Deaths	Cases	Deaths	Cases	Deaths	Cases	Deaths	Cases	Deaths	CFR (%)
2009	5	5	0	0	0	0	0	0	156	15	161	20	12.4
2010	117	8	0	0	0	0	0	0	90	16	207	24	11.6
2011	109	6	0	0	0	0	0	0	121	17	230	23	10.0
2012	96	9	62	9	6	0	0	0	115	19	279	37	13.3
2013	90	23	48	13	2	1	30	0	85	21	255	58	22.7
2014	80	30	16	7	6	3	47	1	101	26	250	67	26.8
2015	122	34	17	1	28	9	75	0	179	86	421	130	30.9
2016	62	21	14	2	55	17	29	0	124	48	284	88	31.0
2017	49	22	6	3	78	31	24	0	102	43	259	99	38.2
2018	40	12	10	6	77	28	36	0	105	46	268	92	34.3
2019	27	10	21	4	99	31	29	0	86	33	262	78	29.8
2020	25	10	10	5	74	32	15	0	66	20	190	67	35.3
2021	46	17	10	6	89	30	3	0	158	42	306	95	31.0
2022	90	37	29	21	166	49	55	35	190	92	530	234	44.2
2023	93	39	34	20	155	57	71	52	118	65	471	233	49.5
Total	1,051	283	277	97	835	288	414	88	1,429	541	4,373	1,345	–
CFR (%)	26.90		35.01		34.50		21.30		37.90		30.76

CFR = case-fatality rate.

^*These data are from the Public Health Services Institute, Baja California, Mexico. Epidemiological surveillance (special system, rickettsiosis). Data not publicly available.

^† These data are from the Ministry of Health, Chihuahua, Mexico. Epidemiological surveillance (special system, rickettsiosis). Data not publicly available.

^‡ These data are from the Ministry of Health, Coahuila, Mexico. Special epidemiological surveillance system, rickettsiosis. Data not publicly available.

^§ These data are from the Government of Mexico.⁶⁷

^‖ These data are from the Government of Sonora.⁶⁸