  Neutrino emission rate from baryonic matter in neutron stars via weak neutral
vector interaction is computed up to order O(v_F^6), where v_F is the Fermi
velocity in units of speed of light. The vector current polarization tensors
are evaluated with full vertices which include resummed series in the
particle-hole channel. The neutrino emissivity is enhanced compared to the
O(v_F^4) order up of 10% for values v_F< 0.4 characteristic to baryons in
compact stars.
