Current-vortex filament solutions to the two-fluid plasma equations that de
scribe drift-Alfven waves are presented. Such filament systems are Hamilton
ian. Integrable three and four filament systems are discussed in some detai
l. A wide variety of orbit topologies exists in the plasma case. Special at
tention is paid to collapses where all filaments contract to a single point
. The differences and extensions with respect to point vortex solutions in
two-dimensional (2D) incompressible Euler systems is pointed out.