Volume 8, Number 9—September 2002
Research
Spatial Analysis of Human Granulocytic Ehrlichiosis near Lyme, Connecticut
Figure 3

Figure 3. a. Single identified cluster of human granulocytic ehrlichiosis (HGE) cases within the 12-town area (maximum cluster size ≤50% total population), relative risk (RR)=1.8, p=0.001; b. Two identified clusters of HGE cases within the 12-town area (maximum cluster size ≤ 25% total population): primary cluster: RR=2.6, p=0.001, secondary cluster: RR=2.6, p=0.16.
1 Since this study was conducted, new nomenclature (Anaplasma phagocytophila) has been proposed; see Dumler JS, Barbet AF, Bekker CP, Dasch GA, Palmer GH, Ray SC, et al. Reorganization of genera in the families Rickettsiaceae and Anaplasmataceae in the order Rickettsiales: unification of some species of Ehrlichia with Anaplasma, Cowdria with Ehrlichia, and Ehrlichia with Neorickettsia, descriptions of six new species combinations and designation of Ehrlichia equi and ‘HGE agent’ as subjective synonyms of Ehrlichia phagocytophila. Int J Syst Evol Microbiol 2001;51:2145–65.