FIG. 4.

Geographic distribution of mtDNA haplotypes of P. leucopus and P. leucopus-borne hantaviruses. The shaded area represents the geographic distribution of P. leucopus according to Hall (17). White, dotted, grey, and black mouse figures designate localities containing Eastern, Northwestern, Central, and Southwestern mtDNA haplotypes, respectively. Black squares, triangles, and diamonds indicate localities containing northeastern, southwestern, and “hybrid” karyotypes, respectively, according to Baker et al. (5). White virion figures indicate localities where IN and OK hantavirus lineages were recovered from P. leucopus. The grey virion figure shows NY hantavirus. Mice from northern Ohio, southwestern Kentucky, and Colorado were assigned to mtDNA haplotype groups based on phylogenetic analysis of the fragment 1 only and therefore were not included in Fig. 3.