More virus strains   found in pigs.
Greg
G
Cima
D000818:Animals; D017934:Coronavirus / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification*; D018352:Coronavirus Infections / Q000453:epidemiology / Q000662:veterinary* / Q000821:virology; D013552:Swine; D013553:Swine Diseases / Q000453:epidemiology / Q000821:virology*; D014481:United States / Q000453:epidemiology