نوع مقاله : مقاله کامل
نویسندگان
1 بخش تحقیق و تولید واکسن های ویروسی طیور ، موسسه تحقیقات واکسن و سرم رازی، سازمان تحقیقات کشاورزی، آموزش و ترویج (AREEO)، کرج، ایران
2 بخش تشخیص و تحقیق بیماریهای طیور، موسسه تحقیقات واکسن و سرم سازی رازی، سازمان تحقیقات، آموزش و ترویج کشاورزی ، ایران
3 دانشیار بخش تحقیق و تولید واکسن های ویروسی طیور، موسسه تحقیقات واکسن و سرم سازی رازی، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران
4 گروه واکسنهای انسانی، موسسه تحقیقات واکسن و سرم رازی، سازمان تحقیقات کشاورزی، آموزش و ترویج (AREEO)، کرج، ایران
5 بخش ایمونولوژی ، انستیتو پاستورتهران ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Researchers record new isolates of circulating influenza viruses. To prove the novelty of the virus phenotype, it is checked against the standard antiserum with a specific HI test. If the standard serum fails to completely neutralize the isolate, the genotypic change has increased to such an extent that it has caused a phenotypic change. In a research, the method of investigation and phenotypic identification of new strains of influenza (H9N2) in Iran was carried out according to the instructions of the CDC center. Three isolates of avian influenza virus (strain (H9N2) named A, B and C and the vaccine strain virus were passaged in SPF embryonated eggs for renewal. (1377) with fresh antigens and polyclonal serum, a special hemagglutination inhibition test was performed and the neutralization rate of viruses against polyclonal antiserum was evaluated .Of the three selected isolates, only sample C showed a difference of five wells compared to the vaccinal virus. The results of isolates A and B were similar to influenza vaccine virus. To ensure the accuracy of the results, the experiment was repeated three times, and the results of all three repetitions were similar. The results of this research proved the applicability of the special hemagglutination (HI) test method for the phenotypic identification of new isolates under the H9N2 type. It is recommended that the country's avian influenza reference laboratories use this method.
کلیدواژهها [English]