  Results of optical spectral monitoring of CI Cam just after its a unusual
bright and rapidly evolving X-ray burst are reported. This star is a
symbiotic-type X-ray binary. The X-ray-radio-optical burst and the appearance
of relativistic S-shaped SS433-like jets make CI Cam to be a very interesting
star. We observed emergence of a high excitation and variable emission line
spectrum, with broad components of hydrogen and helium lines and the nebular
forbidden line of NII. All this agrees well with the formation of relativistic
jets in the burst. It was concluded that the burst resulted in destruction of
external stationary accretion disk regions. The peak X-ray luminosity is about
10E+37 erg/s at the adopted distance of 1 kpc. It is well below the Eddington
luminosity, which is necessary for jet production in a supercritical accretion
disk. We propose that jets were formed in a collimated accretion-ejection
process in a strong magnetic field of a neutron star.
