First detection and characterization of Psittaciform bornaviruses in naturally infected and diseased birds in Thailand

Sa-ardta, Phirawich; Rinder, Monika; Sanyathitiseree, Pornchai; Weerakhun, Sompoth; Lertwatcharasarakul, Preeda; Lorsunyaluck, Benchapol; Schmitz, Anna; Korbel, Rüdiger

doi:10.1016/j.vetmic.2019.01.013

Cited by 12 publications

(14 citation statements)

References 32 publications

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“…Lower and higher percentages of detection can be seen when making a comparison with other countries. A higher prevalence was found in Thailand with 54% ABV-positive cases, while a lower one was detected in Japan with 4.3% (22,23). The results from this study indicated a low percentage of ABV infection among pet birds.…”

Section: Discussionmentioning

confidence: 44%

Molecular detection, risk factors and public awareness of avian bornavirus among captive and non-captive birds in Peninsular Malaysia

Lutpi

Abu

Arshad

et al. 2022

Journal of Veterinary Research

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Introduction Proventricular dilatation disease (PDD) is caused by avian bornavirus (ABV) has been identified in psittacine, non-psittacine birds and waterfowl. Birds may show signs of gastrointestinal tract deficit or neurological dysfunction or even both. The objectives of this study were to determine the molecular prevalence, risk factors and public awareness of ABV and PDD among captive and non-captive birds in Peninsular Malaysia. Material and Methods A total of 344 cloacal swabs or faeces were collected and subjected to detection using the RT-PCR assay. Meanwhile, KAP questionnaires were distributed by using the Google forms platform. Results Molecular prevalence studies revealed that 4.5% (9/201) of the pet birds were ABV-positive, whereas 0% (0/143) in waterfowl. Nine positive pet birds were identified to be PaBV-2, which is closest to ABV isolates EU781967 (USA). Among the risk factors analysed, category, age and, location, were found to show an association with the ABV positivity. The KAP survey result showed: the respondents have low knowledge (32.9%), however, they showed positive attitude (60.8%) and good practice (94.9%). The association between knowledge, attitude and practice showed that there was a significant association between knowledge-attitude and also attitude-practice (P<0.05). Conclusion This study proved that avian bornavirus (ABV) causes proventricular dilatation disease (PDD) among a group of pet birds of Psittaciformes, but it is present in Peninsular Malaysia with a low prevalence rate. Furthermore, in addition to the useful databases obtained from this study, the level of public awareness on the importance of avian bornavirus that causes fatal disorders among a wide range of bird species is satisfactorily raised.

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Section: Discussionmentioning

confidence: 44%

Molecular detection, risk factors and public awareness of avian bornavirus among captive and non-captive birds in Peninsular Malaysia

Lutpi

Abu

Arshad

et al. 2022

Journal of Veterinary Research

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“…Thus, the region likely became and will likely remain a PaBV-4 hot spot. Indeed, the first report of a high prevalence of PaBV-4 in captive parrots with PDD-like disease in Thailand was published in 2019 (35). The Thailand strain is a close relative to the most dominant lineage, which is derived from the German strain (35).…”

Section: Discussionmentioning

confidence: 99%

“…Indeed, the first report of a high prevalence of PaBV-4 in captive parrots with PDD-like disease in Thailand was published in 2019 (35). The Thailand strain is a close relative to the most dominant lineage, which is derived from the German strain (35). These data support our speculation that PaBV-4 invaded southeastern Asia via the captive parrot trade.…”

Section: Discussionmentioning

confidence: 99%

Ban on wild bird importation accelerated the spread of global viral outbreaks in parrots

Komorizono

Aihara

Fujiwara

et al. 2022

Preprint

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Since the isolation of the first parrot bornavirus (PaBV), which causes slow-onset, fatal neurological disease in various parrot species, in the United States in 2008, PaBVs have spread rapidly worldwide; however, the reason remains unknown. In this study, we show that the most dominant lethal genotype, PaBV-4, spread via the global trade of captive birds. Analyses of traded parrot numbers in the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) database and PaBV-4 phylodynamics suggested that the ban of wild imported birds in the European Union (EU) in 2007 facilitated the international trade of captive parrots, which resulted in an increase in the effective population size of PaBV-4. This change coincided with a historical PaBV-4 epidemic. These data suggest that due to the low transmission efficiency and long incubation period of PaBV-4, the majority of PaBV-4 transmission occurred in breeding facilities and the increased trade of captive parrots accelerated the global spread of PaBV-4 infection. Our results indicate that interventions for the protection of wild animals and prevention of infectious diseases may conversely cause epidemics of infectious diseases in the global system. Conservation of ecosystems requires not only the establishment of importation restrictions and maintenance of the diversity of wild animals but also the implementation of multifaceted management measures, such as quarantine policies and breeding control in captive animals.

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“…Birds mount a detectable, although variable, humoral response to bornaviral infections. Therefore, serological methods such as Western blotting and enzyme-linked immunosorbent assay (ELISA) may be employed as tentative diagnostic tools in order to identify anti-PaBV antibodies [ 37 , 38 , 39 ]. Unfortunately, there is no available commercial ELISA for PDD to date, and these tests are usually performed by few laboratories.…”

Section: Diagnostic Techniquesmentioning

confidence: 99%

Seeing beyond a Dilated Proventriculus: Diagnostic Tools for Proventricular Dilatation Disease in Psittacine Birds

Araújo

Rech

2021

Animals

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Proventricular dilatation disease (PDD) is a life-threatening neurological disease caused by parrot bornaviruses (PaBVs) that affects several species worldwide. PDD can be clinically manifested as either a central nervous system condition or a gastrointestinal condition if the nerves and ganglia of the gastrointestinal tract are compromised. We intend to provide a concise review for veterinary clinicians and diagnosticians with focus on the main tools available for PDD diagnosis, including gross and histopathology, immunohistochemistry, molecular techniques and serology. We suggest that a combination of different strategies can increase the success of diagnostic outcomes, as tools such as reverse transcription polymerase chain reaction (RT-PCR) and enzyme-linked immunosorbent assay (ELISA) can be implemented for identification of bornaviral infections in live patients, and gross pathology, histopathology, immunohistochemistry and RT-PCR can provide reliable results for postmortem diagnosis of PDD.

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First detection and characterization of Psittaciform bornaviruses in naturally infected and diseased birds in Thailand

Cited by 12 publications

References 32 publications

Molecular detection, risk factors and public awareness of avian bornavirus among captive and non-captive birds in Peninsular Malaysia

Molecular detection, risk factors and public awareness of avian bornavirus among captive and non-captive birds in Peninsular Malaysia

Ban on wild bird importation accelerated the spread of global viral outbreaks in parrots

Seeing beyond a Dilated Proventriculus: Diagnostic Tools for Proventricular Dilatation Disease in Psittacine Birds

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