“…The ability of IBV to vary its genome and form new strains via natural or induced recombination has been suggested and examined in several investigations (Kusters et al, 1990;L. Wang et al, 1993;Jia et al, 1995;Kottier et al, 1995;Lee & Jackwood, 2000Wang & Huang, 2000;Estevez et al, 2003;Brooks et al, 2004;Stavrinides & Guttman, 2004;Fang et al, 2005;Dolz et al, 2006Dolz et al, , 2008Pyrc et al, 2006;Chen et al, 2009). This emphasizes the immense diversity of coronaviruses and their potential to produce numerous new strains, with differing pathogenicity and heterologous serotypes compared with the parent strains, through recombination alone.…”