HPAI THREAT

HPAI THREAT

THREAT LEVEL OF HPAI FOR POULTRY POPULATIONS IS HIGH

THREAT LEVEL OF HPAI FOR POULTRY POPULATIONS IS HIGH

  • Commercial and wild bird populations seriously threatened by highly pathogenic avian influenza (HPAI).

  • Some virus subtypes are now widespread in wild birds.

FAO 21/06/2022

  • Commercial and wild bird populations seriously threatened by highly pathogenic avian influenza (HPAI).

  • Some virus subtypes are now widespread in wild birds.

FAO 21/06/2022

The ecology and adaptive evolution of influenza A interspecies transmissionUdavan loseph, Yvonne C. F. Su, Dhanasekaran Viavkrishna, Gavin I. D. Smith First bublished: 18 lulv 2016
https://doi.org/10.1111/irv.12412

ZOONOTIC POTENTIAL

  • H5N1 and H7N9 HPAI viruses, and LPAI H9N2 can rarely infect humans.

  • Surveillance of illnesses like HPAI is recognized by both WOAH and WHO as a crucial component of One Health management plans.

ZOONOTIC POTENTIAL

  • H5N1 and H7N9 HPAI viruses, and LPAI H9N2 can rarely infect humans.

  • Surveillance of illnesses like HPAI is recognized by both WOAH and WHO as a crucial component of One Health management plans.

The ecology and adaptive evolution of influenza A interspecies transmissionUdavan loseph, Yvonne C. F. Su, Dhanasekaran Viavkrishna, Gavin I. D. Smith First bublished: 18 lulv 2016
https://doi.org/10.1111/irv.12412

GENETIC VARIABILITY

Rapid evolution and adaptation of avian influenza viruses is facilitated by their genetic diversity. Genetic
changes can lead to altered host range and virulence.

GENETIC VARIABILITY

Rapid evolution and adaptation of avian influenza viruses is facilitated by their genetic diversity. Genetic
changes can lead to altered host range and virulence.

POULTRY RESERVOIR

  • Poultry serve as a reservoir for avian influenza viruses.

  • Close proximity between infected birds and non-
    infected birds and mammalian species facilitates transmission.

Migration of HPAI through birds

POULTRY RESERVOIR

  • Poultry serve as a reservoir for avian influenza viruses.

  • Close proximity between infected birds and non-
    infected birds and mammalian species facilitates transmission.

Migration of HPAI through birds

WILD BIRD MIGRATION

  • Migratory birds transport avian influenza viruses over long distances.

  • Their movements contribute to the global spread of the virus.

  • HPAI reservoir now in wild birds increases risk of direct infection of commercial poultry

Lee, Dong‐Hun et al. “Evolution, global spread, and pathogenicity of highly pathogenic avian influenza H5Nx clade 2.3.4.4.” Journal of Veterinary Science 18 (2017): 269 – 280.

WILD BIRD MIGRATION

  • Migratory birds transport avian influenza viruses over long distances.

  • Their movements contribute to the global spread of the virus.

  • HPAI reservoir now in wild birds increases risk of direct infection of commercial poultry

Lee, Dong‐Hun et al. “Evolution, global spread, and pathogenicity of highly pathogenic avian influenza H5Nx clade 2.3.4.4.” Journal of Veterinary Science 18 (2017): 269 – 280.

EFFORTS TO MITIGATE THE RISK OF THE SPREAD OF HPAI INCLUDE:

EFFORTS TO MITIGATE THE RISK OF THE SPREAD OF HPAI INCLUDE:

MONITORING AND SURVEILLANCE

  • Structured virus monitoring in commercial and wild bird populations defines risk and guides intervention strategies.

MONITORING AND SURVEILLANCE

  • Structured virus monitoring in commercial and wild bird populations defines risk and guides intervention strategies.

Vaccinations

VACCINATION

  • Well vaccinated poultry populations reduce disease and virus transmission if managed correctly.

  • Stringent virus monitoring strategies are critical to maximize the success of vaccination.

  • Empowering farmers, and governments with rapid data helps stop disease spread, contain the damage, and reduce economic loss.

  • Key component of future One Health strategies.

Vaccinations

VACCINATION

  • Well vaccinated poultry populations reduce disease and virus transmission if managed correctly.

  • Stringent virus monitoring strategies are critical to maximize the success of vaccination.

  • Empowering farmers, and governments with rapid data helps stop disease spread, contain the damage, and reduce economic loss.

  • Key component of future One Health strategies.

Biosecurity Measures

BIOSECURITY

  • Essential on poultry farms and in live poultry markets to help prevent spread of virus.

  • Measures include controlling access, implementing hygiene protocols, and reducing contact between wild birds, poultry and mammals.

Biosecurity Measures

BIOSECURITY

  • Essential on poultry farms and in live poultry markets to help prevent spread of virus.

  • Measures include controlling access, implementing hygiene protocols, and reducing contact between wild birds, poultry and mammals.