Acute respiratory distress syndrome caused by : a case report and literature review.

Background: Psittacosis is a zoonotic disease with a low incidence rate and a lack of specificity in clinical manifestations, making it prone to be missed, misdiagnosed, and even cause delayed treatment for patients. Metagenomic next-generation sequencing (mNGS) was successfully performed for the diagnosis of a young patient with psittacosis progressing to acute respiratory distress syndrome (ARDS), and precisely targeted antibiotic treatment was promptly administered. Additionally, a comprehensive review was conducted on 68 cases of psittacosis complicated with ARDS, with the goal of improving the clinical awareness of this disease.

Psittacosis Pneumonia Features, Distinguishing Characteristics, and Outcomes: A Retrospective Study.

Purpose: Psittacosis is an often-neglected cause of community acquired pneumonia (CAP). The limited diagnostic methods for psittacosis pneumonia invariably result in an unfavourable prognosis. Consequently, the early detection of psittacosis pneumonia is crucial.

Early and rapid diagnosis of pneumonia by tNGS in six patients: a case series.

Background: Psittacosis is a zoonotic infectious disease caused by () infection, which can be transmitted by birds, poultry and wild animals. The symptoms and imaging findings of pneumonia are atypical and primarily rely on etiological diagnosis. The incidence of infection has been significantly underestimated because of the low sensitivity and poor timeliness of traditional diagnostic methods.

Introduction of Chlamydia psittaci into a hospital area by feral pigeons.

Pigeons are associated with zoonotic pathogens such as Chlamydia psittaci, the main causative agent of avian chlamydiosis, and related to psittacosis cases in humans worldwide. The aim of the present study was to investigate the occurrence of C. psittaci in feral pigeons (Columba livia) and environmental samples from places frequented by pigeons in a Brazilian hospital area.

Molecular Detection and Genotyping of in Birds in Buenos Aires City, Argentina.

is a bacterium that infects several species of birds and mammals. It is the causal agent of avian chlamydiosis and psittacosis in humans and it is globally distributed. is one of the main zoonotic pathogens transmitted by birds.

Chlamydia psittaci infection induces IFN-I and IL-1β through the cGAS-STING-IRF3/NLRP3 pathway via mitochondrial oxidative stress in human macrophages.

Chlamydia psittaci (C. psittaci) is a multi-host pathogen that elicits robust innate immune responses in macrophages. Chlamydiae target host mitochondria to manipulate the cellular fate and metabolic functions.

Zoonotic and other veterinary chlamydiae - an update, the role of the plasmid and plasmid-mediated transformation.

The obligate intracellular bacterial genus Chlamydia harbours species with zoonotic potential, particularly C. psittaci, causative agent of psittacosis, and C. abortus, which may lead to miscarriage in pregnant women.

Chronicles from the Nest: A Case of Psittacosis in India.

Psittacosis is a rare zoonotic disease caused by a gram-negative obligate intracellular bacterium , which is transmitted through contact with infected birds. It comprises approximately 1% of all community-acquired pneumonia cases. However, this can be just the tip of the iceberg pertaining to the lack of routine testing and awareness of this disease entity, thereby requiring a high index of suspicion for its diagnosis.

Hearing loss as the first symptom of pneumonia caused by Chlamydia psittaci: a case report and literature review.

Background: The typical clinical symptoms of psittacosis pneumonia include fever, dry cough, and chills. Sudden sensorineural hearing loss is a relatively uncommon condition in pneumonia caused by Chlamydia psittaci. In this study, we reported a rare case of Chlamydia psittaci pneumonia presented as hearing loss.

Distinction of clinical features and microbiological methods between and pneumonia confirmed by metagenomic next-generation sequencing.

Objectives: Detection and diagnosis of () pneumonia is often overlooked due to conventional methods limitations and similarity to other atypical community acquired pneumonia (CAP). Using mNGS, we aimed to distinguish psittacosis from legionellosis for early pneumonia diagnosis and better prognosis.

Methods: Thirty-seven patients diagnosed with atypical CAP were enrolled in this retrospective study, including 14  pneumonia and 23 () pneumonia.

: A zoonotic pathogen causing avian chlamydiosis and psittacosis.

is an obligate intracellular gram-negative bacterium with a unique biphasic developmental cycle. It is a zoonotic pathogen with a wide range of hosts and can cause avian chlamydiosis in birds and psittacosis in humans. The pathogen is transmitted mainly through horizontal transmission between birds.

Chlamydiosis in Animals.

The family consists of Gram-negative, obligate intracellular bacteria that replicate within the cells of a diverse range of hosts. These hosts include domesticated animals such as cats, dogs, and livestock, as well as wildlife like koalas and birds, exotic species such as reptiles and amphibians, and humans. Chlamydial infection can result in various clinical signs, including respiratory diseases, reproductive failures, ocular pathologies, and enteritis, though the infected organism may remain asymptomatic.

Circulation of avian Chlamydia abortus in the Netherlands and community-acquired pneumonia: an outbreak investigation and retrospective cohort study.

Background: In 2021, a novel group of Chlamydia strains in wild birds was classified as avian Chlamydia abortus, with unknown zoonotic potential. We report relevant features of avian C abortus infections from a Dutch family cluster and unrelated historical cases using clinical, epidemiological, and microbiological data.

Methods: An outbreak of avian C abortus started in the Netherlands in December, 2022.

CRISPR/Cas9-edited duck enteritis virus expressing Pmp17G of Chlamydia psittaci induced protective immunity in ducklings.

Chlamydia psittaci is threatening to the animal industry and human beings. Live attenuated duck enteritis virus (DEV) is considered a good vaccine vector. In the present study, the Pmp17G antigen of C.

The therapeutic efficacy of neem (Azadirecta indica) leaf extract against coinfection with Chlamydophila psittaci and low pathogenic avian influenza virus H9N2 in broiler chickens.

Avian chlamydiosis is a serious avian infection that carries a significant zoonotic danger to the poultry industry. The respiratory co-infections caused by the low pathogenic avian influenza virus H9N2 (LPAIV H9N2) also cause significant financial losses in the poultry industry. The purpose of this study was to examine the pathogenicity of Chlamydophila psittaci, and LPAIV H9N2 individually and in combination in broiler chickens, as well as to determine whether or not aqueous neem (Azadirachta indica) leaf extract is effective against infections caused by these pathogens.

A novel variant of Chlamydia psittaci causing human psittacosis in China.

From January 2022 to November 2022, sporadic psittacosis occurred in Lishui city, China. The patients were presented with fever, cough, and pulmonary infiltration. Their clinical symptoms were not relieved after receiving cephalosporin, penicillin, beta-lactamase inhibitors, and quinolones.