| risk factors for the introduction of avian influenza virus into commercial layer chicken farms during the outbreaks caused by a low-pathogenic h5n2 virus in japan in 2005. | avian influenza outbreaks caused by a low-pathogenic h5n2 virus occurred in japan from june to december 2005. all 41 affected farms housed layer chickens. therefore, we conducted a case-control study targeting all commercial layer chicken farms within the movement restriction areas in ibaraki prefecture, where most outbreaks were detected, to investigate the risk factors for the introduction of avian influenza virus (aiv). four variables were identified as risk factors associated with the introd ... | 2007 | 18035971 |
| human h5n2 avian influenza infection in japan and the factors associated with high h5n2-neutralizing antibody titer. | h5n2 avian influenza virus infection of humans has not been reported thus far. the first h5n2 avian influenza infection of poultry in japan occurred in ibaraki. | 2008 | 18603824 |
| low pathogenicity h5n2 avian influenza outbreak in japan during the 2005-2006. | at the end of may 2005, a low-pathogenicity avian influenza (lpai) virus of subtype h5n2 was isolated for the first time from chickens in japan. through active and epidemiological surveillance, 5.78 million chickens on 41 farms were found to be affected and 16 h5n2 viruses were isolated. antigenic analysis revealed antigenic similarity of these isolates. phylogenetic analysis showed that they originated from a common ancestor and clustered with the h5n2 strains prevalent in central america that ... | 2007 | 17524576 |
| demonstration of serum-neutralising antibody to turkey rhinotracheitis virus in serum from chicken flocks in japan. | since between 1989 and 1991, broiler, broiler breeder and layer chickens reared in three different prefectures of japan, hyogo, ibaraki, and miyazaki, were diagnosed clinically as having swollen head syndrome (shs) these flocks were survey for antibody to turkey rhinotracheitis (trt) virus using a serum neutralisation (sn) test. trt-specific sn antibody was found in flocks of chickens in 2 out of the 3 prefectures. thereafter, particular in the summers of both 1993 and 1994 outbreaks of shs occu ... | 1996 | 8898285 |
| isolation of microsporum gallinae from a fighting cock (gallus gallus domesticus) in japan. | a case of tinea corporis caused by microsporum gallinae was found in 2011 in okinawa, located in the southern part of japan. the patient was a 96-year-old, otherwise healthy, japanese man, who had been working as a breeder of fighting cocks for more than 70 years. he was bitten on his right forearm by one of the cocks and a few weeks later, two erythematous macules appeared on the right forearm, accompanied by a slight itchy sensation. while the first isolate of this dermatophyte was recovered f ... | 2013 | 22809243 |
| analysis of the fusion protein gene of newcastle disease viruses isolated in japan. | the complete nucleotide sequences of the fusion (f) protein gene of newcastle disease viruses (ndv) isolated in japan from 1930 to 2007 (45 strains total) were determined and genetically analyzed. in the deduced amino acid sequences of fusion protein, the 5 potential asparagine-linked glycosylation sites and 10 cysteine residues were all conserved in the ndv examined in this study. the major epitopes involved in virus neutralization are conserved in most of the ndv strains isolated in japan exce ... | 2011 | 20736513 |
| spatial analysis of low pathogenic h5n2 avian influenza outbreaks in japan in 2005. | we conducted a spatial analysis of low pathogenic h5n2 avian influenza (ai) outbreaks, that affected 41 chicken farms in japan in 2005. a statistically significant (p=0.001) cluster of ai-positive farms was identified in the central part of ibaraki prefecture. inside the ai cluster, the density was high for both chicken farms and chicken population, the proportion of layer finisher type farms was high and the farm size was large. we considered it important to take precautions for ai outbreaks in ... | 2009 | 19652489 |
| a novel genotype of avian infectious bronchitis virus isolated in japan in 2009. | avian infectious bronchitis viruses (ibvs) isolated from commercial layer flocks kept in ibaraki prefecture in 2009 were genetically and serologically characterized. reverse transcription-pcr coupled with direct nucleotide sequencing and genbank blast database analysis of the hypervariable region of the s1 subunit of the virus spike gene showed that these isolates are genetically very different from the previously known ibv genotypes in japan. furthermore, none of the antisera used in this study ... | 2010 | 20460833 |
| characterization of ornithobacterium rhinotracheale from commercial layer chickens in eastern japan. | from a total of 72 commercial layer and pullet farms that were monitored in the eastern japan area, 4 farms had mild to severe respiratory disease accompanied by decreased feed intake and drop in egg production. microbiological analysis showed that 3 of the 4 farms, particularly from fukushima, tochigi, and ibaraki prefectures, were positive for ornithobacterum rhinotracheale (ort). out of 65 birds examined, ort was isolated in 21 birds (32.31%). all isolates were gram-negative pleomorphic rods ... | 2018 | 29077917 |