title: [An observation on the persistent period of specific antibodies in epidemic hemorrhagic fever patients' convalescent sera].
mesh_terms: D000914:Antibodies, Viral / Q000032:analysis*; D003289:Convalescence; D006476:Orthohantavirus / Q000276:immunology*; D006801:Humans; D012328:RNA Viruses / Q000276:immunology*; D013997:Time Factors
chemical_list: D000914:Antibodies, Viral