  We start with an effective field theory containing classical vortex solutions
and show that the fluctuations of these vortices are described by an effective
string theory. Viewed as a model for long distance QCD, this theory provides a
concrete picture of the QCD string as a fluctuating Abrikosov-Nielsen-Olesen
vortex of a dual superconductor on the border between type I and type II. We
present arguments which suggest that the action of the effective string theory
is the Nambu-Goto action, i.e. the rigidity vanishes. We then use this theory
to calculate the corrections to classical Regge trajectories due to string
fluctuations.
