  Relativistic exchange current corrections to the impulse approximation in low
and intermediate energy neutrino--nucleus scattering are presented assuming
non--vanishing strange quark form factors for constituent nucleons. Two--body
exchange current operators which treat {\em all} $SU(3)$ vector and axial
currents on an equal footing are constructed by generalizing the soft--pion
dominance method of Chemtob and Rho. For charged current reactions, exchange
current corrections can reduce the impulse approximation results by 5 to 10 \%
depending on the nuclear density. A finite strange quark form factor may change
the total cross section for neutral current scattering by 20\% while exchange
current corrections are found to be sensitive to the nuclear density.
Implications on the current LSND experiment to extract the strange quark axial
form factor of the nucleon are discussed.
