  The recently reported deviations of selected non-yrast states in $^{110}$Cd
from the expected spherical-vibrator behaviour, is addressed by means of an
Hamiltonian with U(5) partial dynamical symmetry. The latter preserves the U(5)
symmetry in a segment of the spectrum and breaks it in other states. The effect
of intruder states is treated in the framework of the interacting boson model
with configuration mixing.
