The National Institute of Infectious Diseases (NIID) is a research institute attached to the Ministry of Health, Labour and Welfare for conducting (i) fundamental and applied research on infectious diseases and (ii) national test for lot release and development of antibiotics and vaccines. This site will be to close two notable important news of infectious diseases in Japan. It will also present many comprehensive informations of latest researches being done on all depertments including Infectious Disease Surveillance Center.