[The debut of Jennerian vaccination in the mining regions of Transylvania].

The first attempts at vaccination by Jenner's method in Transylvania (Romania) were made in 1801; vaccination became compulsory in 1808. By researching the mining archives, details about the evolution of vaccination activities were found. The most important are: the initiative of the surgeon Peter Molnar from Sacaramb (June 1801), the first vaccinations performed by the chief medical officer of the mining area (November-December 1801), the consistent reporting of vaccination, payment of the vaccinator surgeons, vaccination promotion and means of providing vaccination material.