  We obtain a new exact solution to the field equations in the EGB modified
theory of gravity for a 5-dimensional spherically symmetric static
distribution. By using a transformation, the study is reduced to the analysis
of a single second order nonlinear differential equation. In general the
condition of pressure isotropy produces a first order differential equation
which is an Abel equation of the second kind. An exact solution is found. The
solution is examined for physical admissability. In particular a set of
constants is found which ensures that a pressure-free hypersurface exists which
defines the boundary of the distribution. Additionally the isotropic pressure
and the energy density are shown to be positive within the radius of the
sphere. The adiabatic sound speed criterion is also satisfied within the fluid
ensuring a subluminal sound speed. Furthermore, the weak, strong and dominant
conditions hold throughout the distribution. On setting the Gauss-Bonnet
coupling to zero, an exact solution for 5-dimensional perfect fluids in the
standard Einstein theory is obtained. Plots of the dynamical quantities for the
Gauss-Bonnet and the Einstein case reveal that the pressure is unaffected while
the the energy density increases under the influence of the Gauss-Bonnet term.
