title: Sample submissions drop despite novel H1N1 concerns.
authors.forename: Greg
authors.initials: G
authors.lastname: Cima
mesh_terms: D000818:Animals; D053118:Influenza A Virus, H1N1 Subtype; D009976:Orthomyxoviridae Infections / Q000175:diagnosis / Q000453:epidemiology / Q000662:veterinary*; D013552:Swine; D013553:Swine Diseases / Q000175:diagnosis* / Q000453:epidemiology; D014481:United States / Q000453:epidemiology; D016885:United States Department of Agriculture