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. 2016 Jul 6;95(1):50–54. doi: 10.4269/ajtmh.15-0707

Figure 1.

Figure 1.

(A) Counties with confirmed or probable cases of human granulocytic anaplasmosis (HGA) (data from http://www.cdph.ca.gov/programs/vbds/pages/vbdsannualreports.aspx). (B) Counties where Anaplasma phagocytophilum has been confirmed in western black-legged tick populations (red), and where A. phagocytophilum has not been observed (gray) (data obtained from this study and from previous published studies).14–18 (C) Number of HGA cases reported in California from 1998 to 2014. HGA is a reportable disease in California, and cases are reported by physicians to local health departments for review, which in turn report cases to the California Department of Public Health (CDPH). We used data from CDPH spanning 1998–2014, with updated data and exposure locations courtesy of CDPH (personal communication). Probable cases involve clinically compatible case (meets clinical evidence criteria) that has supportive laboratory results, and confirmed cases are clinically compatible cases that are laboratory confirmed (http://wwwn.cdc.gov/nndss/conditions/ehrlichiosis-and-anaplasmosis/case-definition/2008/, accessed November 9, 2015) Cases were differentiated into probable and confirmed from 2000 onward.