title: Surveillance for immunity against equine influenza virus infections.
mesh_terms: D000818:Animals; D000914:Antibodies, Viral / Q000032:analysis*; D000956:Antigens, Viral; D000939:Epitopes; D006385:Hemagglutination Inhibition Tests; D006389:Hemagglutinins, Viral; D006734:Horse Diseases / Q000276:immunology*; D006736:Horses / Q000276:immunology*; D009980:Influenza A virus / Q000145:classification / Q000276:immunology*; D007252:Influenza Vaccines; D009976:Orthomyxoviridae Infections / Q000276:immunology / Q000662:veterinary*; D014611:Vaccination / Q000662:veterinary
chemical_list: D000914:Antibodies, Viral; D000956:Antigens, Viral; D000939:Epitopes; D006389:Hemagglutinins, Viral; D007252:Influenza Vaccines