Evidence for the existence of two new members of the family Chlamydiaceae and proposal of Chlamydia avium sp. nov. and Chlamydia gallinacea sp. nov.

Sachse, Konrad; Laroucau, Karine; Riege, Konstantin; Wehner, Stefanie; Dilcher, Meik; Creasy, Heather Huot; Weidmann, Manfred; Myers, Garry; Vorimore, Fabien; Vicari, Nadia; Magnino, Simone; Liebler-Tenorio, Elisabeth M.; Bavoil, Patrik M.; Hufert, Frank T.; Rosselló‐Móra, Ramon; Marz, Manja

doi:10.1016/j.syapm.2013.12.004

Cited by 164 publications

(148 citation statements)

References 37 publications

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“…C. gallinacea is a newly described chlamydial species [10]. Recent surveys on the prevalence of C. gallinacea in poultry flocks in four European countries and China revealed a prevalence that could even exceed that of C. psittaci [11], at least for chickens and turkeys.…”

Section: Discussionmentioning

confidence: 99%

“…The pathogenicity of C. gallinaceae, a recently discovered species, has yet to be defined [10]. The infectious dose seems to be a critical parameter for an active human infection.…”

Section: Discussionmentioning

confidence: 99%

“…Recent studies reported frequent C. psittaci infections in European and Asian chickens [7][8][9]. While C. psittaci was until recently considered to be the sole causative agent of avian chlamydiosis, two new avian species, C. avium and C. gallinacea, have recently been described [10]. Based on currently available data, using both broadrange and specific diagnostic tools, it seems likely that C. gallinacea is widely disseminated among poultry and C. avium is frequently found in pigeons.…”

Section: Introductionmentioning

confidence: 99%

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Outbreak of psittacosis in a group of women exposed to Chlamydia psittaci-infected chickens

Laroucau¹,

Aaziz²,

Meurice

et al. 2015

Eurosurveillance

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Eight cases of psittacosis due to Chlamydia psittaci were identified in May 2013 among 15 individuals involved in chicken gutting activities on a mixed poultry farm in France. All cases were women between 42 and 67 years-old. Cases were diagnosed by serology and PCR of respiratory samples. Appropriate treatment was immediately administered to the eight hospitalised individuals after exposure to birds had been discovered. In the chicken flocks, mainly C. gallinacea was detected, a new member of the family Chlamydiaceae, whereas the ducks were found to harbour predominantly C. psittaci, the classical agent of psittacosis. In addition, C. psittaci was found in the same flock as the chickens that the patients had slaughtered. Both human and C. psittaci-positive avian samples carried the same ompA genotype E/B of C. psittaci, which is widespread among French duck flocks. Repeated grassland rotations between duck and chicken flocks on the farm may explain the presence of C. psittaci in the chickens. Inspection by the veterinary service led to temporary closure of the farm. All birds had to be euthanised on site as no slaughterhouses accepted processing them. Farm buildings and grasslands were cleaned and/or disinfected before the introduction of new poultry birds.

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Section: Discussionmentioning

confidence: 99%

“…The pathogenicity of C. gallinaceae, a recently discovered species, has yet to be defined [10]. The infectious dose seems to be a critical parameter for an active human infection.…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Outbreak of psittacosis in a group of women exposed to Chlamydia psittaci-infected chickens

Laroucau¹,

Aaziz²,

Meurice

et al. 2015

Eurosurveillance

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“…In particular, two more avian chlamydial species, C. avium and C. gallinacea (14), and one Candidatus taxon, "Candidatus Chlamydia ibidis" (15), were recently described. The diversity of chlamydial agents in birds was further extended by studies reporting mammalian chlamydiae, such as C. abortus, C. pecorum, and C. trachomatis, also being capable of infecting avian hosts (16,17).…”

mentioning

confidence: 99%

Chlamydiaceae in North Atlantic Seabirds Admitted to a Wildlife Rescue Center in Western France

Aaziz

Gourlay

Vorimore

et al. 2015

Appl Environ Microbiol

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f Birds are the primary hosts of Chlamydia psittaci, a bacterium that can cause avian chlamydiosis in birds and psittacosis in humans. Wild seabirds are frequently admitted to wildlife rescue centers (WRC) at European Atlantic coasts, for example, in connection with oil spills. To investigate the extent of chlamydial shedding by these birds and the resulting risk for animals in care and the medical staff, seabirds from a French WRC were sampled from May 2011 to January 2014. By use of a quantitative PCR (qPCR), 195 seabirds belonging to 4 orders, 5 families and 13 species were examined, of which 18.5% proved to be Chlamydiaceae positive. The highest prevalence of shedders was found in northern gannets (Morus bassanus) (41%), followed by European herring gulls (Larus argentatus) (14%) and common murres (Uria aalge) (7%). Molecular characterization and phylogenetic analysis of qPCR-positive northern gannet samples revealed two variants of a strain closely related to C. psittaci. In European herring gulls and in one common murre, strains showing high sequence similarity to the atypical Chlamydiaceae-like C122 previously found in gulls were detected. Our study shows that seabirds from the northeastern Atlantic Ocean carry several chlamydial organisms, including C. psittaci-related strains. The staff in WRCs should take protective measures, particularly in the case of mass admissions of seabirds.

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“…Recently, new Chlamydia species have been found in birds (13,16,21). In the past five years, several reports on C. psittaci infections in chickens have been published (5-7, 23, 24, 26).…”

Section: Introductionmentioning

confidence: 99%

Chlamydia Psittaci Strains from Broiler Chickens Induce Histopathological Lesions and Mortality in SPF Chickens

Yin

Kalmar

Chiers

et al. 2015

Bulletin of the Veterinary Institute in Pulawy

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A detailed study on histopathological lesions induced by two C. psittaci outer membrane protein A (ompA) genotype B strains (10/423 and 10/525) and one genotype D strain (10/298) in experimentally infected (aerosol) specific pathogen free (SPF) chickens was performed. The strains were derived from Belgian and French commercially raised broilers with pneumonia. Both genotype B and D strains induced conjunctivitis, rhinitis, sinusitis, tracheitis, bronchitis, pneumonitis, airsacculitis, splenitis, hepatitis, nephritis, and enteritis in sequentially (days 2 to 34 post infection) euthanized chickens. Inflammation of the ovaries was only observed in genotype D infected chickens. Overall, the genotype D strain caused more severe gross and histopathological lesions and mortality (54.5%) early upon infection. The genotype D strain seemed to replicate faster as severity of the lesions increased more quickly. C. psittaci is a primary pathogen in chickens, and efficient monitoring and control of this emerging zoonotic pathogen is urgently needed.

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Evidence for the existence of two new members of the family Chlamydiaceae and proposal of Chlamydia avium sp. nov. and Chlamydia gallinacea sp. nov.

Cited by 164 publications

References 37 publications

Outbreak of psittacosis in a group of women exposed to Chlamydia psittaci-infected chickens

Outbreak of psittacosis in a group of women exposed to Chlamydia psittaci-infected chickens

Chlamydiaceae in North Atlantic Seabirds Admitted to a Wildlife Rescue Center in Western France

Chlamydia Psittaci Strains from Broiler Chickens Induce Histopathological Lesions and Mortality in SPF Chickens

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