ATTENUATED PORCINE REPRODUCTIVE AND RESPIRATORY SYNDROME VIRUS (RRS) AND ITS POSSIBLE USE IN IMMUNIZATION MEANS Russian patent published in 2020 - IPC C12N7/08 A61K39/12 

FIELD: biotechnology.

SUBSTANCE: invention relates to attenuated porcine reproductive and respiratory syndrome virus (PRRS) strain, to recovered polynucleotide containing RNA molecule corresponding to polynucleotide, having sequence SEQ ID NO: 1, or a polynucleotide with SEQ ID NO: 1, to a recombinant expression vector containing a polynucleotide, to a Host Cell for polynucleotide expression according to claim 2, containing a recombinant expression vector according to claim 3 or containing a polynucleotide, to an immunogenic or vaccinal composition containing an effective amount of a strain, or at least one polynucleotide, or at least one vector, or at least one host cell and at least one carrier and/or an adjuvant suitable for use in veterinary science, use of the strain of claim 1 or a polynucleotide, or vector, or host cell as a medicament, preferably in a vaccine therapy of porcine reproductive and respiratory syndrome, to a method for preventing swine infection by PRRS virus or developing PRRS, involving swine inoculation with a strain or an immunogenic or vaccinal composition.

EFFECT: invention allows preventing swine infestation with PRRS virus or developing PRRS.

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