Detection of Chlamydia psittaci Genotypes Among Birds in Northeast Iran.
We determined the prevalence of Chlamydia psittaci genotypes in asymptomatic and symptomatic birds in northeast Iran. Samples were collected from 11 species of Psittaciformes and 1 species of Columbiformes from 2015 to 2016. Choanal cleft and cloacal swab samples, fresh fecal samples, and/or tissue samples of 70 symptomatic and 130 asymptomatic birds were collected and tested by molecular detection (nested polymerase chain reaction [PCR] testing specific for C psittaci). Results showed C psittaci was detected in 37 (18.5%) of 200 birds (18/37 symptomatic and 19/37 asymptomatic birds) by nested PCR assay. Of the PCR-positive samples, 14 products were positive for oligonucleotide sets CTU/CTL by a second PCR assay and genotyped by outer membrane protein A (ompA) gene sequencing. Of the 10 samples positive for genotype A (cockatiels [Nymphicus hollandicus, n = 5], ring-necked parakeet [Psittacula krameri, n = 2], African gray parrot [Psittacus erithacus, n = 3]), 6 samples were from asymptomatic and 4 from symptomatic birds. Genotype B was observed in 3 samples from symptomatic birds (P krameri [n = 2], pigeon [Columba livia, n = 1]), and provisional genotype I was detected in one symptomatic cockatiel. These findings revealed the importance of monitoring imported asymptomatic birds in developing countries, especially the Middle East, where there is no systematic monitoring. To the best of our knowledge, this is the first report regarding the detection of C psittaci provisional genotype I in cockatiels.
['Mina|Abbasi|A|', 'Fatemeh|Akbarzadeh|A|', 'Jamshid|Razmyar|R|']
D000818:Animals D001425:Bacterial Outer Membrane Proteins D001483:Base Sequence D001715:Bird Diseases D001717:Birds D002691:Chlamydophila psittaci D046092:Columbiformes D005838:Genotype D007492:Iran D010802:Phylogeny D016133:Polymerase Chain Reaction D011563:Psittaciformes D009956:Psittacosis
Chlamydia psittaci Psittaciformes Columbiformes avian chlamydiosis nested-PCR omp A gene