| isolation of a novel swine influenza virus from oklahoma in 2011 which is distantly related to human influenza c viruses. | of the orthomyxoviridae family of viruses, only influenza a viruses are thought to exist as multiple subtypes and has non-human maintenance hosts. in april 2011, nasal swabs were collected for virus isolation from pigs exhibiting influenza-like illness. subsequent electron microscopic, biochemical, and genetic studies identified an orthomyxovirus with seven rna segments exhibiting approximately 50% overall amino acid identity to human influenza c virus. based on its genetic organizational simila ... | 2013 | 23408893 |