A horse flu epizootic that spread across North America that year had immobilized Boston's fire department horses.
influenza | avian influenza | Influenza | Avian influenza | Influenza A virus subtype H1N1 | Swine Influenza | Swine influenza | Eastern equine encephalitis virus | swine influenza | Influenza A virus subtype H5N1 | Influenza A virus | influenza A virus | Equine therapy | Equine influenza | Equine herpesvirus 1 | Equine dentistry | Equine coat color |