Prevalence and risk factors of Avian Influenza Viruses among household ducks in Chattogram, Bangladesh

2022 ◽  
Author(s):  
Md. Ashiqur Rahman ◽  
Joseph P. Belgrad ◽  
Md. Abu Sayeed ◽  
Md. Sadeque Abdullah ◽  
Shanta Barua ◽  
...  
Keyword(s):  
Risk Factors ◽  
Avian Influenza ◽  
Influenza Viruses ◽  
Avian Influenza Viruses

scholarly journals Serosurvey of Avian Influenza Viruses (H5, H7, and H9) and Associated Risk Factors in Backyard Poultry Flocks of Lahore District, Pakistan

2021 ◽  
Vol 8 ◽  
Author(s):  
Mamoona Chaudhry ◽  
Hamad Bin Rashid ◽  
Michael Thrusfield ◽  
Mark C. Eisler ◽  
Susan C. Welburn
Keyword(s):  
Risk Factors ◽  
Avian Influenza ◽  
Influenza Viruses ◽  
Flock Size ◽  
Avian Influenza Viruses ◽  
Cross Sectional Survey ◽  
Backyard Poultry ◽  
Associated Risk Factors ◽  
Backyard Birds ◽  
Different Sources

Rural poultry constitutes 56% of the total poultry population in Pakistan; however, epidemiological information about avian influenza viruses (AIVs) in backyard poultry flocks is lacking. A cross-sectional survey of villages of Lahore district was conducted from July 2009 to August 2009 using two-stage cluster sampling and probability proportional to size (PPS) sampling to estimate seroprevalence and its associated risk factors. A random selection of 35 clusters from 308 villages of Lahore were considered, and from each cluster, six chickens aged >2 months were selected. A total of 210 serum samples were collected and examined by the hemagglutination inhibition (HI) test for specific antibodies against AIV subtypes H5, H7, and H9. Overall weighted seroprevalence for AIVs was 65.2% (95% CI: 55.6–74.8%), and for subtype H5, H7 & H9 was 6.9% (95% CI: 10.8–23.0%), 0% (95% CI: 0–1.7%), and 62.0% (95% CI: 52.2–71.8%) respectively. However, none of the samples were positive for H7. The average flock size was 17.3 birds, and the main purpose of keeping poultry was for eggs/meat (70.6%, 95% CI: 59.7–81.4). A majority of them were reared in a semi-caged system (83%, 95% CI: 74.5–91.3). Backyard birds were received from different sources, that is, purchased from the market or received as a gift from friends or any NGO, and were 5.7 times more likely to become avian influenza (AI) seropositive than those that were not exposed to these sources (CI 95%: 2.0–716.0). Backyard birds which were received from different sources, that is, purchased from the market or received from friends or any NGO, were 5.7 times more likely to become AI seropositive compared to those that were not (CI 95%: 2.5–18.7). To reduce the risk of AIV in Pakistan, continuous surveillance of backyard poultry would be needed.

scholarly journals Avian influenza viruses in humans: lessons from past outbreaks

2019 ◽  
Vol 132 (1) ◽  
pp. 81-95 ◽  
Author(s):  
Yao-Tsun Li ◽  
Martin Linster ◽  
Ian H Mendenhall ◽  
Yvonne C F Su ◽  
Gavin J D Smith
Keyword(s):  
Risk Factors ◽  
Avian Influenza ◽  
Virus Transmission ◽  
Human Infection ◽  
Influenza Viruses ◽  
Avian Species ◽  
Avian Influenza Viruses ◽  
Virus Surveillance ◽  
Changing Patterns ◽  
Human Infections

Abstract Background Human infections with avian influenza viruses (AIV) represent a persistent public health threat. The principal risk factor governing human infection with AIV is from direct contact with infected poultry and is primarily observed in Asia and Egypt where live-bird markets are common. Areas of agreement Changing patterns of virus transmission and a lack of obvious disease manifestations in avian species hampers early detection and efficient control of potentially zoonotic AIV. Areas of controversy Despite extensive studies on biological and environmental risk factors, the exact conditions required for cross-species transmission from avian species to humans remain largely unknown. Growing points The development of a universal (‘across-subtype’) influenza vaccine and effective antiviral therapeutics are a priority. Areas timely for developing research Sustained virus surveillance and collection of ecological and physiological parameters from birds in different environments is required to better understand influenza virus ecology and identify risk factors for human infection.

Seroprevalence and Risk Factors for Exposure of Free-Range Poultry to Avian Influenza Viruses in Important Bird Areas in Uganda

2015 ◽  
Vol 59 (1) ◽  
pp. 64-70 ◽  
Author(s):  
H. Kirunda ◽  
F. Kabi ◽  
N. Muwereza ◽  
T. Kabuuka ◽  
S. D. Kerfua ◽  
...  
Keyword(s):  
Risk Factors ◽  
Avian Influenza ◽  
Influenza Viruses ◽  
Avian Influenza Viruses ◽  
Free Range

Predictors for Risk Factors for Spread of Avian Influenza Viruses by Poultry Handlers in Live bird markets in Uganda

2014 ◽  
Vol 62 (5) ◽  
pp. 334-343 ◽  
Author(s):  
H. Kirunda ◽  
K. K. Mugimba ◽  
B. Erima ◽  
D. Mimbe ◽  
D. K. Byarugaba ◽  
...  
Keyword(s):  
Risk Factors ◽  
Avian Influenza ◽  
Influenza Viruses ◽  
Avian Influenza Viruses ◽  
Live Bird Markets ◽  
Live Bird

Vitamin D receptor and 1α-hydroxylase are highly expressed in lungs of mice infected with H9N2 avian influenza viruses

2021 ◽  
Vol 211 ◽  
pp. 105907
Author(s):  
Pengjing Lian ◽  
Yu Bai ◽  
Jingyun Li ◽  
Hongyan Wang ◽  
Xiaofei Niu ◽  
...  
Keyword(s):  
Vitamin D ◽  
Avian Influenza ◽  
Vitamin D Receptor ◽  
Influenza Viruses ◽  
Avian Influenza Viruses

One-step fast and label-free imaging array for multiplexed detection of trace avian influenza viruses

2021 ◽  
pp. 338645
Author(s):  
Dagang Jiang ◽  
Yafei Tian ◽  
Yujiao Zhang ◽  
Xueyun Lu ◽  
Dan Xiao ◽  
...  
Keyword(s):  
Avian Influenza ◽  
Influenza Viruses ◽  
Label Free ◽  
Avian Influenza Viruses ◽  
Multiplexed Detection ◽  
Imaging Array ◽  
One Step

Domestic ducks play a major role in the maintenance and spread of H5N8 highly pathogenic avian influenza viruses in South Korea

2019 ◽  
Vol 67 (2) ◽  
pp. 844-851 ◽  
Author(s):  
Jung‐Hoon Kwon ◽  
Justin Bahl ◽  
David E. Swayne ◽  
Yu‐Na Lee ◽  
Youn‐Jeong Lee ◽  
...  
Keyword(s):  
Avian Influenza ◽  
South Korea ◽  
Highly Pathogenic Avian Influenza ◽  
Influenza Viruses ◽  
Avian Influenza Viruses ◽  
Domestic Ducks ◽  
Highly Pathogenic ◽  
Pathogenic Avian Influenza

scholarly journals Pathogenic Assessment of Avian Influenza Viruses in Migratory Birds

2021 ◽  
pp. 1-40
Author(s):  
Eun-Ha Kim ◽  
Young-ll Kim ◽  
Se Mi Kim ◽  
Kwang-Min Yu ◽  
Mark Anthony B. Casel ◽  
...  
Keyword(s):  
Avian Influenza ◽  
Migratory Birds ◽  
Influenza Viruses ◽  
Avian Influenza Viruses
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