抄録
1. Attempts were made to isolate mumps virus by means of amniotic inoculation of developing hen's eggs and a virus was isolated which was antigenically identified as same as the Enders strain of mumps virus.
2. Investigations were made in a certain fairly isolated community to obtain an information of the distribution of the antibodies (hemagglutination-inhibition antibody and complement-fixation antibodies) against mumps virus. (Refer to page 1-6.)
