scholarly journals The Role of Point-of-Care Test to Control Highly Pathogenic Avian Influenza in Indonesia

Author(s):  
Simson Tarigan
2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Alice Fusaro ◽  
Bianca Zecchin ◽  
Bram Vrancken ◽  
Celia Abolnik ◽  
Rose Ademun ◽  
...  

AbstractThe role of Africa in the dynamics of the global spread of a zoonotic and economically-important virus, such as the highly pathogenic avian influenza (HPAI) H5Nx of the Gs/GD lineage, remains unexplored. Here we characterise the spatiotemporal patterns of virus diffusion during three HPAI H5Nx intercontinental epidemic waves and demonstrate that Africa mainly acted as an ecological sink of the HPAI H5Nx viruses. A joint analysis of host dynamics and continuous spatial diffusion indicates that poultry trade as well as wild bird migrations have contributed to the virus spreading into Africa, with West Africa acting as a crucial hotspot for virus introduction and dissemination into the continent. We demonstrate varying paths of avian influenza incursions into Africa as well as virus spread within Africa over time, which reveal that virus expansion is a complex phenomenon, shaped by an intricate interplay between avian host ecology, virus characteristics and environmental variables.


Pathogens ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 171
Author(s):  
Ahmed Magdy Khalil ◽  
Yoshikazu Fujimoto ◽  
Isshu Kojima ◽  
Mana Esaki ◽  
Kyonha Ri ◽  
...  

We isolated two highly pathogenic avian influenza viruses (HPAIVs) of subtype H5N8 clade 2.3.4.4b from falcated duck (Anas falcata) feces and environmental water collected at an overwintering site in Japan. Our isolates were almost genetically identical to each other and showed high genetic similarity with H5N8 HPAIVs recently isolated in South Korea, a distant part of Japan, and European countries. These results suggest the potential role of falcated ducks in the dissemination of HPAIVs.


2012 ◽  
Vol 3 (1) ◽  
pp. 125-132
Author(s):  
I. T. Rusev ◽  
V. D. Vinnik ◽  
D. A. Sokolovskiy

In 2005 highly pathogenic avian influenza spreaded rapidly from the Central Asia along the main migration routes of wild birds includingUkraine. In the autumn, and mostly in the winter, the avian influenza was found in many countries of Europe, Asia and Africa in the places of traditional birds wintering. The paper considers the ways of importation of the avian influenza pathogens intoUkraineand the role of wild birds in the possible formation of anthropogenic and natural foci of highly pathogenic avian influenza in megapolis conditions.


2020 ◽  
Vol 35 (4) ◽  
pp. 494-498
Author(s):  
Daniel Oladimeji Oluwayelu ◽  
Clement Adebajo Meseko ◽  
Adekunle Bamidele Ayinmode ◽  
Adebowale Idris Adebiyi ◽  
Mike Aneshimi Lawani ◽  
...  

2021 ◽  
Author(s):  
Claire Guinat ◽  
Cecilia Valenzuela Agui ◽  
Timothy G Vaughan ◽  
Jeremie Scire ◽  
Anne Pohlmann ◽  
...  

Recent outbreaks of highly pathogenic avian influenza H5N8 virus in Europe have caused severe damage to animal health, wildlife conservation and livestock economic sustainability. While epidemiological and phylogenetic studies have generated important clues about the virus spread in Europe, they remained opaque to the specific role of poultry farms and wild birds. Using a phylodynamic framework, we inferred the H5N8 virus transmission dynamics among poultry farms and wild birds in four severely affected countries and investigated drivers of spread between farms across borders during the 2016-17 epidemic. Based on existing genetic data, we showed that the virus was likely introduced into poultry farms during the autumn, in line with the timing of arrival of migratory wild birds. Then, transmission was mainly driven by farm-to-farm transmission in Germany, Hungary and Poland, suggesting that better understanding of how infected farms are connected in those countries would greatly help control efforts. In contrast, the epidemic was dominated by wild bird-to-farm transmission in Czech Republic, meaning that more sustainable prevention strategies should be developed to reduce virus exposure from wild birds. We inferred effective reproduction number Re estimates among poultry farms and wild birds. We expect those estimates being useful to parameterize predictive models of virus spread aiming at optimising control strategies. None of the investigated predictors related to live poultry trade, poultry census and geographic proximity were identified as supportive predictors of the viral spread between farms across borders, suggesting that other drivers should be considered in future studies.


2019 ◽  
Vol 25 (3) ◽  
pp. 551-554 ◽  
Author(s):  
Marie Souvestre ◽  
Claire Guinat ◽  
Eric Niqueux ◽  
Luc Robertet ◽  
Guillaume Croville ◽  
...  

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