A Dose Finding Study of VN-0200

Inclusion Criteria: * Japanese healthy elderly aged \>=60 and =\<80 years (at the time of informed consent). * Subjects who can follow the compliance requirements during clinical trials, undergo medical examinations and tests specified by the protocol, and report symptoms, etc. Exclusion Criteria: * Serious cardiovascular, respiratory, hepatic, renal, gastrointestinal, or neuropsychiatric disorders. * Serious acute illness. * Has been diagnosed with congenital or acquired immunodeficiency. * Previous vaccination with an RSV vaccine (including the investigational drugs). * Having a history of anaphylaxis or severe allergies due to medicines, or vaccination. * Administration of gamma globulins, systemic immunosuppressants (including drugs for the treatment of autoimmune diseases), hematopoietics (excluding iron and vitamins), and corticosteroids (excluding topical preparations, inhalants, and small-dose short-term oral administration\*) or planned administration of them in the period starting 28 days prior to informed consent and ending 28 days after the second vaccination. \* \<14 days, 20 mg/day on a prednisolone basis. * Planned or actual administration of other vaccine in the period starting 14 days prior to informed consent and ending 14 days after the second vaccination.