scholarly journals Increasing Prevalence of Unique Mutation Patterns in H5N1 Avian Influenza Virus HA and NA Glycoproteins from Human Infections in Egypt

Sequencing ◽  
2010 ◽  
Vol 2010 ◽  
pp. 1-3 ◽  
Author(s):  
El-Sayed M. Abdelwhab ◽  
Hafez M. Hafez ◽  
Mona M. Aly ◽  
Christian Grund ◽  
Timm C. Harder

Highly pathogenic avian influenza H5N1 virus (HPAIV) continues to be a candidate of a further influenza virus pandemic. Egypt is the country worst affected by human cases of HPAIV H5N1 infection in 2009. Increased infection of preschool children and decreased mortality rates suggested subtle changes in the epidemiology of the infection. Among other factors, the evolution of several conspicuous viral genetic markers in the HA and NA genes of HPAIV H5N1 viruses of human cases from Egypt and their putative influence on biological virus characteristics described here may contribute to this situation.

2010 ◽  
Vol 1 (2) ◽  
pp. 165-166
Author(s):  
Stéphanie Mahieu

The recent Romanian outbreak of subtype H5N1 of the highly pathogenic avian influenza (HPAI) virus, the first detected case of H5N1 avian influenza in Europe in 2010, has reinvigorated the debate concerning risks related to the spread of avian influenza in the European Union.


2005 ◽  
Vol 10 (3) ◽  
Author(s):  
C S Brown ◽  
W J Paget ◽  
A Meijer

Poultry outbreaks and human cases of infection with highly pathogenic avian influenza virus A(H5N1) continue to be documented in Asia, with several new human infections being reported since December 2004, following a period of 2 months when no cases were reported.


Author(s):  
V. Yu. Marchenko ◽  
N. I. Goncharova ◽  
E. V. Gavrilova ◽  
R. A. Maksyutov ◽  
A. B. Ryzhikov

This review describes the current situation on highly pathogenic avian influenza virus in 2020 and provides forecast of the possible further spread of avian influenza in Russia. In 2020, the circulation of a wide variety of highly pathogenic avian influenza virus subtypes which have epizootiological and epidemiological significance was recorded in the world. Outbreaks of highly pathogenic avian influenza were reported in over 30 countries. Apart from this, human infections with influenza viruses of the A/H5Nx and A/H9N2 subtypes were reported. There was a large-scale epizootic in Russia in 2020, which affected more than 10 regions. Outbreaks among wild birds and poultry were caused by the highly pathogenic influenza virus A/H5N8 of clade 2.3.4.4b. As a result of those outbreaks, more than 1.5 mil. poultry were killed or perished. It was revealed that strains of the influenza virus isolated in Russia have a high degree of identity with the strains circulating in Europe and Southeast Asia. Thus, it was shown again that the territory of Russia plays an important role in the global spread of avian influenza virus. 


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