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. 2018 Jan 19;97(3):e9632. doi: 10.1097/MD.0000000000009632

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Copyright © 2018 the Author(s). Published by Wolters Kluwer Health, Inc.

This is an open access article distributed under the Creative Commons Attribution License 4.0 (CCBY), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. http://creativecommons.org/licenses/by/4.0

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Migration pattern of HAV genotype I circulation in Bulgaria. The bubblegram shows the frequency of gene flow (migrations) in Bulgaria to/from different geographic areas (towns). The surface of each circle is proportional to the percentage of observed migrations. Migrations were inferred with a modified version of the Slatkin and Maddison algorithm. (Panel A) HAV subtype Ib (third dataset). A: Botevgrad; B: Novachene; C: Sofia; D: Kostinbrod; E: Shumen; F: Elin Pelin; G: Gabrovo; H: Pernik; I: Dolna Banja. (Panel B) subtype Ia (fifth dataset). A: Sofia (Gara Jana); B: Sofia; C: Ihtiman; D: Etrople; E: Shumen; F: Pernik; G: Samokov; H: Doganovo; I: Varna. (Panel C) map of Bulgaria highlighting the different area enrolled in migration patterns of HAV genotype I. HAV = hepatitis A virus.