  We report first results on the strange quark number susceptibility, chi_s,
over a large range of temperatures, mainly in the plasma phase of QCD. Chi_s
jumps across the phase transition temperature, T_c, and grows rapidly with
temperature above but close to T_c. For all quark masses and susceptibilities
in the entire temperature range studied, we found significant departures from
ideal-gas values. We also observed a strong correlation between these
quantities and the susceptibility in the scalar/pseudo-scalar channel,
supporting ideas of ``dynamical confinement'' in the high temperature phase of
the QCD plasma.
