| chlamydia pecorum is the endemic intestinal species in cattle while c. gallinacea, c. psittaci and c. pneumoniae associate with sporadic systemic infection. | to investigate the prevalence and diversity of bovine chlamydia spp. in cattle, whole blood from dairy and beef cattle in 11 provinces of china (n=2003) and vaginal swabs, whole blood samples, feces, milk samples from cows in a yangzhou dairy farm (n=108) were examined using genus- and species-specific pcrs. in cattle from 11 provinces, 2.4% (48/2003) of whole-blood samples were positive for chlamydia spp., and four chlamydia species (c. pneumoniae, 41.7%, 20/48; c. psittaci, 22.9%, 11/48; c. ga ... | 2016 | 27599935 |
| genetic diversity of chlamydia among captive birds from central argentina. | to study the occurrence of chlamydia spp. and their genetic diversity, we analysed 793 cloacal swabs from 12 avian orders, including 76 genera, obtained from 80 species of asymptomatic wild and captive birds that were examined with conventional nested polymerase chain reaction and quantitative polymerase chain reaction. chlamydia spp. were not detected in wild birds; however, four species (chlamydia psittaci, chlamydia pecorum, chlamydia pneumoniae and chlamydia gallinacea) were identified among ... | 2015 | 25469538 |
| chlamydia gallinacea, not c. psittaci, is the endemic chlamydial species in chicken (gallus gallus). | to investigate the prevalence and diversity of chlamydia spp. in domestic birds in china, oral and cloacal swabs of healthy chickens, ducks, geese and pigeons were collected nationwide from live-animal markets and examined by chlamydia spp. 23 s rrna gene fret-pcr followed by high-resolution melting curve analysis and confirmatory sequencing. overall, 26.2% of the birds (602/2,300) were positive for chlamydia spp. and five chlamydia spp. were identified. while occasional detection of c. suis and ... | 2016 | 26778053 |
| a cross sectional study on dutch layer farms to investigate the prevalence and potential risk factors for different chlamydia species. | in poultry several chlamydia species have been detected, but chlamydia psittaci and chlamydia gallinacea appear to be most prevalent and important. chlamydia psittaci is a well-known zoonosis and is considered to be a pathogen of poultry. chlamydia gallinacea has been described more recently. its avian pathogenicity and zoonotic potential have to be further elucidated. within the netherlands no data were available on the presence of chlamydia on poultry farms. as part of a surveillance programme ... | 2018 | 29324884 |
| molecular prevalence and genotyping of chlamydia spp. in wild birds from south korea. | wild birds are reservoirs for chlamydia spp. of the total 225 samples from wild birds during january to september 2016 in korea, 4 (1.8%) and 2 (0.9%) showed positive for chlamydia psittaci and chlamydia gallinacea, respectively. phylogenetic analyses and comparisons of sequence identities for outer-membrane protein a (ompa) revealed that korean c. psittaci fall into three previously known genotypes; genotype e, 1v and 6n, whereas the korean c. gallinacea were classified as new variants of c. ga ... | 2017 | 28579580 |
| whole-genome sequence of chlamydia gallinacea type strain 08-1274/3. | the recently introduced bacterial species chlamydia gallinacea is known to occur in domestic poultry and other birds. its potential as an avian pathogen and zoonotic agent is under investigation. the whole-genome sequence of its type strain, 08-1274/3, consists of a 1,059,583-bp chromosome with 914 protein-coding sequences (cdss) and a plasmid (p1274) comprising 7,619 bp with 9 cdss. | 2016 | 27445388 |
| from genomes to genotypes: molecular epidemiological analysis of chlamydia gallinacea reveals a high level of genetic diversity for this newly emerging chlamydial pathogen. | chlamydia (c.) gallinacea is a recently identified bacterium that mainly infects domestic chickens. demonstration of c. gallinacea in human atypical pneumonia suggests its zoonotic potential. its prevalence in chickens exceeds that of c. psittaci, but genetic and genomic research on c. gallinacea is still at the beginning. in this study, we conducted whole-genome sequencing of c. gallinacea strain jx-1 isolated from an asymptomatic chicken, and comparative genomic analysis between c. gallinacea ... | 2017 | 29212448 |
| chlamydia gallinacea: a widespread emerging chlamydia agent with zoonotic potential in backyard poultry. | chlamydia gallinacea, a new chlamydial agent, has been reported in four european countries as well as argentina and china. experimentally infected chickens with c. gallinacea in previous study showed no clinical signs but had significantly reduced gains in body weight (6·5-11·4%). slaughterhouse workers exposed to infected chickens have developed atypical pneumonia, indicating c. gallinacea is likely a zoonotic agent. in this study, fret-pcr confirmed that c. gallinacea was present in 12·4% (66/ ... | 2017 | 28768558 |
| evidence for the existence of two new members of the family chlamydiaceae and proposal of chlamydia avium sp. nov. and chlamydia gallinacea sp. nov. | the family chlamydiaceae with the recombined single genus chlamydia currently comprises nine species, all of which are obligate intracellular organisms distinguished by a unique biphasic developmental cycle. anecdotal evidence from epidemiological surveys in flocks of poultry, pigeons and psittacine birds have indicated the presence of non-classified chlamydial strains, some of which may act as pathogens. in the present study, phylogenetic analysis of ribosomal rna and ompa genes, as well as mul ... | 2014 | 24461712 |