Critical control points for avian influenza A H5N1 in live bird markets in low resource settings

Samaan, Gina; Gultom, Anita; Indriani, Risa; Lokuge, Kamalini; Kelly, Paul

doi:10.1016/j.prevetmed.2011.03.003

Cited by 30 publications

(25 citation statements)

References 15 publications

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“…As tree sparrows are susceptible to AIVs, and they are abundant, widespread, and free ranging, it is possible for them to be infected with AIVs, if an AIV is circulating in poultry or other wild birds in the region where they live. On the other side, some surveys published previously plus the one reported here also suggested that it was uncommon to isolate AIVs from sparrows or other birds in Passeridae or Passeriformes [31]–[41]. For example, in 1999–2000, no AIVs were isolated from passerine birds through a large-scale surveillance of AIVs in wild birds conducted in North Europe [33].…”

Section: Discussionsupporting

confidence: 53%

A Survey of Avian Influenza in Tree Sparrows in China in 2011

et al. 2012

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Tree sparrows ( Passer montanus ) are widely distributed in all seasons in many countries. In this study, a survey and relevant experiments on avian influenza (AI) in tree sparrows were conducted. The results suggested that the receptor for avian influenza viruses (AIVs), SAα2,3Gal, is abundant in the respiratory tract of tree sparrows, and most of the tree sparrows infected experimentally with two H5 subtype highly pathogenic avian influenza (HPAI) viruses died within five days after inoculation. Furthermore, no AIVs were isolated from the rectum eluate of 1300 tree sparrows, but 94 serological positives of AI were found in 800 tree sparrows. The serological positives were more prevalent for H5 subtype HPAI (94/800) than for H7 subtype AI (0/800), more prevalent for clade 2.3.2.1 H5 subtype HPAI (89/800) than for clade 2.3.4 (1/800) and clade 7.2 (4/800) H5 subtype HPAI, more prevalent for clade 2.3.2.1 H5 subtype HPAI in a city in southern China (82/800) than in a city in northern China (8/800). The serological data are all consistent with the distribution of the subtypes or clades of AI in poultry in China. Previously, sparrows or other passerine birds were often found to be pathogenically negative for AIVs, except when an AIV was circulating in the local poultry, or the tested passerine birds were from a region near waterfowl-rich bodies of water. Taken together, the data suggest that tree sparrows are susceptible to infection of AIVs, and surveys targeting sparrows can provide good serological data about the circulation of AIVs in relevant regions.

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Section: Discussionsupporting

confidence: 53%

A Survey of Avian Influenza in Tree Sparrows in China in 2011

et al. 2012

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“…The volume of trade in live poultry has fallen from over 100,000 birds per day to approximately 16,000/ day. While all the measures taken in Hong Kong may not be universally applicable, some of them may be (Indriani et al 2010;Samaan et al 2011).…”

Section: Discussionmentioning

confidence: 99%

“…Thus, while LPM were a ''dead-end'' for the poultry, it was not a ''dead-end'' for the virus. These were concepts that were to be later validated in some markets and traders' yards in other countries in Asia (Indriani et al 2010;Samaan et al 2011).…”

Section: Continued Active Surveillance In Live Poultry Marketsmentioning

confidence: 99%

One Health: The Hong Kong Experience with Avian Influenza

Sims

Peiris

2012

Current Topics in Microbiology and Immunology

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The occurrence of avian influenza A(H5N1) in Hong Kong in 1997 led to the development of a "One-Health" approach to deal with emerging infectious diseases that has been applied to other emergent diseases such as SARS and the pandemic H1N1 2009. Evaluation of poultry marketing and production systems and investigations at the animal-human interface, led to defining the routes of human exposure to avian influenza and factors that allowed virus to multiply and persist. Active and systematic surveillance of apparently healthy as well as diseased poultry and wild birds provided evidence of ongoing virus evolution in the wider region. Epidemiological studies, supplemented with molecular epidemiology, helped to elucidate the role of the poultry marketing system and live poultry markets in the persistence of avian influenza viruses and provided evidence for the impact of interventions designed to interrupt virus transmission. Enhanced bio-security, active surveillance together with targeted and evidence-based interventions in the poultry production, and marketing system together with poultry vaccination has prevented further human H5N1 disease and minimized outbreaks of poultry disease in Hong Kong. Similar strategies have led to the understanding of the emergence of SARS and provided options for preventing the re-emergence of this disease. Surveillance of influenza in swine has provided insights into the emergence of the 2009 pandemic, to the reverse zoonosis of the pandemic virus from humans to swine and to the emergence of novel reassortant viruses within swine. "One Health" strategies are not "cost-free" and require sensitive implementation to optimize food-safety and food security, while safeguarding the economics of animal husbandry and the environment and remaining sensitive to cultural practices.

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“…In addition, there is a growing interest in deploying rapid detection methods in resource-limited settings (Ghosh and Vogt; Hanvoravongchai et al, 2010; Kubo et al, 2010; Ortiz et al, 2009; Oshitani, Kamigaki, and Suzuki, 2008) and expanding non-human influenza surveillance activities (e.g. (Antarasena et al, 2007; Samaan et al, 2011)).…”

Section: Introductionmentioning

confidence: 99%

Rapid, simple influenza RNA extraction from nasopharyngeal samples

Chandler

Griesemer

Cooney

et al. 2012

Journal of Virological Methods

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SUMMARY This report describes the development and pre-clinical testing of a new, random-access RNA sample preparation system (TruTip) for nasopharyngeal samples. The system is based on a monolithic, porous nucleic acid binding matrix embedded within an aerosol-resistant pipette tip and can be operated with single or multi-channel pipettors. Equivalent extraction efficiencies were obtained between automated QIAcube and manual TruTip methods at 106 gene copies influenza A per mL nasopharyngeal aspirate. Influenza A and B amended into nasopharyngeal swabs (in viral transport medium) were detected by real-time RT-PCR at approximately 745 and 370 gene copies per extraction, respectively. RNA extraction efficiency in nasopharyngeal swabs was also comparable to that obtained on an automated QIAcube instrument over a range of input concentrations; the correlation between threshold cycles (or nucleic acid recovery) for TruTip and QIAcube-purified RNA was R2 > 0.99. Preclinical testing of TruTip on blinded nasopharyngeal swab samples resulted in 98% detection accuracy relative to a clinically validated easyMAG extraction method. The physical properties of the TruTip binding matrix and ability to customize its shape and dimensions likewise make it amenable to automation and/or fluidic integration.

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Critical control points for avian influenza A H5N1 in live bird markets in low resource settings

Cited by 30 publications

References 15 publications

A Survey of Avian Influenza in Tree Sparrows in China in 2011

A Survey of Avian Influenza in Tree Sparrows in China in 2011

One Health: The Hong Kong Experience with Avian Influenza

Rapid, simple influenza RNA extraction from nasopharyngeal samples

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