FIELD: medicine.
SUBSTANCE: inventions concern a vaccine and a method for using it. The characterised vaccine contains: (i) a live attenuated QX-like infectious bronchitis (IB) virus produced by egg passage with developing embryos from 25 to 80 times and having S1 protein coded by a nucleotide sequence which is min 95% identical to SEQ ID NO. 1; and (ii) a pharmaceutically acceptable carrier. A method for poultry protection against the QX-like infectious bronchitis (IB) virus involves administering the above vaccine into the poultry within the range of 103 TCID50 to 105,07 TCID50 per the above poultry.
EFFECT: presented inventions are applicable for protection against infectious bronchitis caused by IB-QX-like viruses.
12 cl, 18 tbl, 9 ex
| Title | Year | Author | Number |
|---|---|---|---|
| VACCINE FOR PROPHYLAXIS OF CHICKEN BURSA INFECTIOUS SICKNESS, LYOPHILIZED VIRAL COMPOSITION, METHOD OF CHICKEN PROTECTION FROM THIS DISEASE AND A METHOD OF LIVE VACCINE PREPARING | 1993 |
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