Infected by Hantaan type and Seoul type viruses of HFRS. in apparent infected population,IgG and neutralizing antibody decreased with time.

• 肾综合征出血热(HFRS)汉滩(Hantaan)型和汉城(Seoul)型病毒在感染人体后,显性感染人群IgG抗体、中和抗体随着时间的推移,逐年下降。