Fig 1.

Bayesian phylogeny of concatenated DNA sequences from genes encoding 4b core and DNA polymerase proteins of avipoxviruses. Posterior probability values of the Bayesian trees (1,000 replicates) and neighbor-joining and maximum likelihood bootstrap values (1,000 replicates) of >70 are indicated (MB/NJ/ML). Symbols: <, lower than 70; ¤, branch does not exist with that method. Avipoxvirus clades A to C, subclades, and clusters are labeled according to the nomenclature of Jarmin et al. (25) and Jarvi et al. (46). Novel subgroups described in the present study are highlighted by gray. Isolate origins are given either as U.S. state abbreviations or using the following location codes: Antarctica (ANT), Argentina (ARG), Belgium (BEL), Chile (CHI), Ecuador (ECU), Germany (GER), Hungary (HU), Italy (ITA), Netherlands (NL), Norway (NOR), Portugal (POR), Spain (ES), South Korea (ROK), United Arab Emirates (UAE), and United Kingdom (UK). Avian poxviruses which were isolated from captive birds (aviaries, zoos, etc.) are highlighted by gray, isolates containing potential recombinations are set in a box. The scale represents the number of substitutions per site.