A method for preparing a vaccine for immunization against the disease Porcine Circovirus Disease and/or Enzootic Pneumonia in pigs in which a first container is only partly filled with a first vaccine and a second container is filled with a second vaccine, the second vaccine being transferred into the first container through an adapter device, when a closure device is penetrated for the first and/or only time, and the vaccinating agent is prepared therein, thus making the operation simple, less error-prone and more hygienic, while reducing the materials required.
