pasteurism

from The Century Dictionary.

• noun The protective or prophylactic inoculation of the attenuated virus of certain diseases, especially of hydrophobia, as devised by the French scientist Louis Pasteur (born 1822).
• noun Same as Pasteurization.

from the GNU version of the Collaborative International Dictionary of English.

• noun A method of treatment, devised by Pasteur, for preventing certain diseases, as hydrophobia, by successive inoculations with an attenuated virus of gradually increasing strength.
• noun Pasteurization.