Figure 1

Maximum likelihood phylogeny of selected WNV sequences. GenBank accession numbers. Strain abbreviations (isolation source, country, year and accession number): SE-90: Mimomyia lacustris, Senegal, 1990, DQ318019; ATH002316, R. pulchellus, Kenya, 2010, KC243146.1; Ug-37: human, Uganda, 1937, AY532665; WNFCG: derivate of Ug-37, M12294; SA-89: human, South Africa, 1989, EF429197; SA-01: human, South Africa, 2001, EF429198; Hu-04: Accipiter gentilis, Hungary, 2004, DQ116961; Gr-10: Culex pipiens, Greece, 2010, HQ537483; SA-58: human, South Africa, 1958, EF429200; SA-00: human, South Africa, 2000, EF429199; Rus-07: human, Russia, 2007, FJ425721; Rab-97: Cx. pipiens, Czech Republic, 1997, AY765264.1; CAR-72: Cx. tigripes, Central African Republic, 1972, DQ318020.1; Sarafend: derivate of Ug-37, AY688948.1; Coracopsis vasa, Madagascar, 1978, DQ176636.2; Rus-98: Dermacentor marginatus, Russia, 1998, AY277252.1; human brain in 1999, LEIV-Vlg99-27889, Russia: Volgograd, low Volga, AY277252.1; NY-99, USA, KC407666.1; total brain RNA (patient NYC99002), HNY1999, USA: New York, AF202541.1; crow, WN NY 2000-crow3356, USA: New York, AF404756.1; NY99,385-99, USA, DQ211652.1; Homo sapiens, Italy/2012/Livenza/31.1, Italy: Veneto region, Venice province, JX556213.1; brain of horse with encephalitis, 2003, Morocco, AY701413.1; brain, house sparrow (Passer domesticus), France 405/04, France, 2004, DQ786572.1; equine, WN Italy 1998-equine, Italy, AF404757.1; Culex univittatus, KN3829, AY262283.1 and swine brain, China, 2007, FJ495189.1. Japanese encephalitis virus isolate GenBank accession number FJ495189.1 was used an out-group.