Recent evidence of Avian Influenza in Bangladesh: A review

Jahangir, Alam; Giasuddin, M; Samad, Mohammed A.; Taimur, M. J. F. A.

doi:10.1017/s004393391000053x

Cited by 18 publications

(19 citation statements)

References 3 publications

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“…We detected specific antibody for AIV H5N1 in two sera samples out of 835 sera samples positive for AIV type A specific antibody throughout the study period, and the overall prevalence was 0.09% which is nearly similar to the recent AIV H5N1 prevalence report (0.08%) on live bird market in Bangladesh [19]. Bangladesh first experienced HPAI (H5N1) in early 2007 followed by 2008 and 2009 with highest peak during the period of January to May 2008 [16]. After the outbreak of HPAI in early 2007, around 1.69 million birds were culled and disposed off and 2.25 million eggs were destroyed concurrently.…”

Section: Discussionsupporting

confidence: 67%

“…In Bangladesh, HPAI had been identified for the first time in March 2007 by National Reference Laboratory for Avian Influenza (NRL-AI) after passing a long immediate risk period which was reconfirmed by the International Reference Laboratory in UK and a regional laboratory in Thailand [16]. Human infections with HPAI H5N1 have been reported in Bangladesh and Myanmar (http://www.oie.int/eng/info_ev/en_AI_avianinfluenza.htm ).…”

Section: Introductionmentioning

confidence: 99%

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Surveillance of avian influenza virus type A in semi-scavenging ducks in Bangladesh

et al. 2013

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BackgroundDucks are the natural reservoir of influenza A virus and the central host for highly pathogenic avian influenza (H5N1), while domestic ducks rearing in semi-scavenging system could serve as re-assortment vessels for re-emerging new subtypes of influenza viruses between birds to human. Avian influenza virus (AIV) surveillance in Bangladesh has been passive, relying on poultry farmers to report suspected outbreaks of highly pathogenic H5N1 influenza. Here, the results of an active surveillance effort focusing on the semi-scavenging ducks are presented.ResultA total of 2100 cloacal swabs and 2100 sera were collected from semi-scavenging ducks from three wintering-sites of Bangladesh during three successive winter seasons, December through February in the years between 2009 and 2012. Virus isolation and identification were carried out from the cloacal swabs by virus propagation in embryonated hen eggs followed by amplification of viral RNA using Avian influenza virus (AIV) specific RT-PCR. The overall prevalence of avian influenza type A was 22.05% for swab samples and 39.76% ducks were sero-positive for avian influenza type A antibody. Extremely low sero-prevalence (0.09%) of AIV H5N1 was detected.ConclusionsBased on our surveillance results, we conclude that semi-scavenging ducks in Bangladesh might play important role in transmitting Avian Influenza virus (AIV) type A. However, the current risk of infection for humans from domestic ducks in Bangladesh is negligible. We believe that this relatively large dataset over three winters in Bangladesh might create a strong foundation for future studies of AIV prevalence, evolution, and ecology in wintering sites around the globe.

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Section: Discussionsupporting

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Surveillance of avian influenza virus type A in semi-scavenging ducks in Bangladesh

et al. 2013

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“…Achieving sustainable improvements in biosecurity in small-scale poultry production systems is more complex than in large scale commercial farms. Strict maintenance of biosecurity measures, both in farms and at wet markets, was emphasised by Alam et al (2010). Biosecurity in FP is more challenging in Bangladesh and therefore needs to move from conventional practices, taking lessons from recent outbreak of avian influenza.…”

Section: Biosecurity and Veterinary Servicesmentioning

confidence: 99%

Family poultry production in Bangladesh: is it meaningful or an aimless journey?

Chowdhury

2013

World's Poultry Science Journal

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“…Asymptomatic Ducks play a complex and vital role in the biology of AIV and can shed to the environment through faeces (Songserm et al, 2006). Avian influenza A viruses are very contagious viruses can sicken and even kill certain domesticated bird species including chickens, ducks, and turkeys (Alam et al, 2010). Infected birds can shed avian influenza A viruses in their saliva, nasal secretions, and feces (Giasuddin et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Epidemiology of duck as reservoir of Avian Influenza Virus in Bangladesh

Hassan

Rahman

Das³

et al. 2018

Asian J. Med. Biol. Res

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This research work was conducted to detect the prevalence and incidence of Avian Influenza Virus (AIV) in Duck at hoar area of Kishorganj district in Bangladesh. The study period was July 2013 to December 2013 and the molecular work was done in Central Disease Investigation Laboratory (CDIL), Dhaka. A total number of 736 blood serum sample and 150 cloacal swab sample were collected from asymptomatic semi scavenging duck above 4 month of age. Blood serum sample was tested to detect the prevalence of Avian Influenza Virus A (AIV) specific antibody through indirect Enzyme Linked Immunosorbent Essay (ELISA) and cloacal sample was tested to detect the incidence of AIV through real time Polymerase Chain reaction (PCR). A total number of 736 blood serum sample were tested in which 684 is positive (+ve) of Avian Influenza type A antibody and 52 are negative (-ve) of Avian Influenza type A. The prevalence rate was 92.93%. The tested result shown that prevalence rate was in 4-6 month of age as 93.96%, as 7-9 month of age as 92.92 % and in 10-12 month of age as 91.91%. A total number of 15 pooling sample from 75 cloacal samples was conducted for detection of AIV that shed in environment. After calculating the result through real time Reverse Transcription (RT) -PCR, it was shown that 2 pooling sample was positive (13.33%) for AIV and 13 pooling sample was negative (86.87%) for AIV. So incidence rate was 13.33% for AIV. This duck can transmit the AIV in the surrounding poultry population and clinical outbreaks may occur. After analysis of ELISA & PCR result it was shown that duck act as a natural reservoir of AIV in Bangladesh.

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Recent evidence of Avian Influenza in Bangladesh: A review

Cited by 18 publications

References 3 publications

Surveillance of avian influenza virus type A in semi-scavenging ducks in Bangladesh

Surveillance of avian influenza virus type A in semi-scavenging ducks in Bangladesh

Family poultry production in Bangladesh: is it meaningful or an aimless journey?

Epidemiology of duck as reservoir of Avian Influenza Virus in Bangladesh

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