FIELD: medicine, veterinary.
SUBSTANCE: invention relates to field of veterinary immunology and virology. Method includes aerosol treatment of chicks with vaccine. Chicks are treated with vaccine, obtained by multiple infection of chicken embryos with material, containing Newcastle disease virus, selection of embryos, which survived to 19-day age, their killing by cooling, preparation of virus suspension from chorioallantoic fluid and liver and isolation from it of defective interfering virions.
EFFECT: method presents reliable and safe method of bird vaccination.
1 cl, 2 tbl, 3 ex
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