Publications by authors named "Irina Zaitceva"
Article Synopsis
- Newcastle disease virus (NDV) is a major threat to poultry, with waterfowl and various birds acting as its primary hosts.
- Infected birds exhibit diverse symptoms, primarily affecting the respiratory and nervous systems, and outbreaks occur frequently in Kazakhstan despite vaccination efforts.
- New research shows that NDV nucleic acid can be detected in Kazakhstan's open water, revealing at least three different genotypes of the virus through advanced sequencing techniques.
Isolates of Newcastle disease virus (NDV) from deceased wild and domestic pigeons in Kazakhstan were obtained from the Almaty region during 2005 and were genotypically analyzed by using reverse transcription polymerase chain reaction (RT-PCR) with primers specific to the viral fusion (F) protein gene. Part of the amplified F protein DNA product (nucleotide sequence 47-422) and the deduced amino acid sequences were compared phylogenetically with those from strains previously reported in other geographic regions. Phylogenetic analysis indicated that the Kazakhstanian pigeon paramyxovirus type 1 (PPMV-1) isolates belong to genotype VI or 4bii.
View Article and Find Full Text PDFNewcastle disease virus (NDV) infects domesticated and wild birds throughout the world, and infections with virulent NDV strains continue to cause disease outbreaks in poultry and wild birds. To assess the evolutionary characteristics of 28 NDV strains isolated from chickens in Kazakhstan and Kyrgyzstan during 1998, 2000, 2001, 2003, 2004, and 2005, we investigated the phylogenetic relationships among these viruses and viruses described previously. For genotyping, fusion (F) gene phylogenetic analysis (nucleotide number 47-421) was performed using sequences of Kazakhstanian and Kyrgyzstanian isolates as compared to sequences of selected NDV strains from GenBank.
View Article and Find Full Text PDF