Assessment of Survival Kinetics for Emergent Highly Pathogenic Clade 2.3.4.4 H5Nx Avian Influenza Viruses DOI Creative Commons
Caroline J. Warren, Sharon M. Brookes, Mark Arnold

et al.

Viruses, Journal Year: 2024, Volume and Issue: 16(6), P. 889 - 889

Published: May 31, 2024

High pathogenicity avian influenza viruses (HPAIVs) cause high morbidity and mortality in poultry species. HPAIV prevalence means numbers of infected wild birds could lead to spill over events for farmed poultry. How these pathogens survive the environment is important disease maintenance potential dissemination. We evaluated temperature-associated survival kinetics five clade 2.3.4.4 H5Nx HPAIVs (UK field strains between 2014 2021) incubated at up three temperatures ten weeks. The selected represented northern European winter (4 °C) summer (20 °C); a southern temperature (30 °C). For each HPAIV, time days reduce viral infectivity by 90% T was established (DT), showing that lower incubation prolonged virus (stability), where DT ranged from fastest loss observed 30 °C. Extrapolation graphical plots x-axis intercept provided corresponding extinction decay. Statistical tests difference values times strain indicated majority displayed different other 4 °C 20

Language: Английский

Assessment of Survival Kinetics for Emergent Highly Pathogenic Clade 2.3.4.4 H5Nx Avian Influenza Viruses DOI Creative Commons
Caroline J. Warren, Sharon M. Brookes, Mark Arnold

et al.

Viruses, Journal Year: 2024, Volume and Issue: 16(6), P. 889 - 889

Published: May 31, 2024

High pathogenicity avian influenza viruses (HPAIVs) cause high morbidity and mortality in poultry species. HPAIV prevalence means numbers of infected wild birds could lead to spill over events for farmed poultry. How these pathogens survive the environment is important disease maintenance potential dissemination. We evaluated temperature-associated survival kinetics five clade 2.3.4.4 H5Nx HPAIVs (UK field strains between 2014 2021) incubated at up three temperatures ten weeks. The selected represented northern European winter (4 °C) summer (20 °C); a southern temperature (30 °C). For each HPAIV, time days reduce viral infectivity by 90% T was established (DT), showing that lower incubation prolonged virus (stability), where DT ranged from fastest loss observed 30 °C. Extrapolation graphical plots x-axis intercept provided corresponding extinction decay. Statistical tests difference values times strain indicated majority displayed different other 4 °C 20

Language: Английский

Citations

2