H5N1 Avian Flu: WHO Deems Global Risk 'Low' Amid Vigilance

Thursday 02 May 2024 - 13:04

In a thorough evaluation of the H5N1 avian influenza virus, the World Health Organization (WHO) has assessed the global public health risk posed by the strain as "low." This evaluation follows heightened concerns triggered by the detection of the virus in cattle herds across multiple U.S. states.

"The overall public health risk posed by this H5N1 virus is low, despite the potential spread to cattle in countries other than the United States through migratory birds," the WHO explained in a statement released on Tuesday. The agency indicated that the risk of infection is considered "low to moderate" for individuals exposed to infected birds, animals, or contaminated environments.

As the virus travels globally via migratory bird pathways, the UN agency acknowledged the potential risk of cattle infection in other nations. "Since migratory birds carry the virus, there is certainly a risk that cattle in other countries could become infected," said Wenqing Zhang, Head of the WHO's Global Influenza Program.

While the initial infection originated from birds, investigations are ongoing in the United States to determine whether cow-to-cow transmission has occurred, Zhang added.

"Although many aspects are still under investigation, this suggests that the virus could have found transmission pathways other than those previously known," Zhang stated during a press conference in Geneva.

Comprehensive investigations are underway to determine the extent and severity of the H5N1 avian influenza outbreak detected in approximately 30 herds across eight U.S. states since March.

Despite the WHO's assessment of a "low" global risk, the agency's cautious stance emphasizes the importance of sustained vigilance and preparedness measures. As the virus follows migratory bird routes, the potential for cross-border transmission remains a significant concern, prompting enhanced surveillance and biosecurity protocols worldwide.

While the risk to human health is currently deemed low, the WHO's evaluation serves as a reminder of the persistent threat posed by zoonotic diseases and the necessity of robust monitoring and response mechanisms. As the global community addresses the complexities of this outbreak, the WHO's guidance will shape strategic interventions and enhance international cooperation in safeguarding public health.