This is the prototype short-term vaccine for the disease eating away at the population of the 2nd Kaiserliches Deutschland, developed by scientists of the Stahlhelm Nation; after testing on an AMBU soldier, the Impfstoff is determined to be a temporary solution until the cure and long-term vaccination arrive
Just to me (and WordReference for helping me find a name for this thing, and KAG for his air raid siren) The Impfstoff-22 will last until a new variant of this disease arrives, and scientists of the Stahlhelm Nation are still working on a cure and long-term vaccinator for this terrible disease
