Immunization method: the first immunization is twice, the first immunization is over 9- 12 weeks old, and the second immunization is every 3-4 weeks; After that, every 1 1 month/time (by 1 2 months, the antibody level in the body has decreased, which is not enough to resist the virus). At present, this vaccine is effective in clinic.
(Injection method: subcutaneous injection on shoulder and back)
(Vaccine storage: refrigerated at 2-8 degrees Celsius)