Fig. 2.
Phylogenetic relationship between coronavirus isolates from a spotted hyena (HYENA) in the Serengeti National Park, feline enteric coronavirus (X80799), feline infectious peritonitis virus (X06170), canine coronavirus (AF116247, AB017789, AF116245), and the canine coronavirus vaccine strain CCVInSAVC-1 (A22884). The unrooted maximum-likelihood tree (−ln L = 1581.61) based on the 429 bp segment of the 5′ region of the S gene (Posch et al., 2001) was recovered under the best-fit model (HKY + G) selected by hLRTs in Modeltest Version 3.06 (Posada and Crandall, 1998). Base frequencies: A = 0.3042, C = 0.1875, G = 0.1908, T = 0.3175; transition/transversion ratio: 1.6559; gamma distribution shape parameter: 0.2864. Numbers at nodes represent the percentage of 100 bootstrap replicates.