2023-03-02-世界卫生组织-Influenza_at_the_human-animal_interface_summary_and_assessment,_3_March_2023_6页_237kb

Summary of Influenza at the Human-Animal Interface (27 January to 3 March 2023)

During the specified period, several human cases of influenza infections were reported, primarily involving avian and swine influenza viruses. Key points include:

• New infections: Confirmed cases of influenza A(H5N1), A(H5N6), A(H9N2), and A(H1N1) variant viruses were detected, mainly through exposure to poultry or animal environments.
• Risk assessment: The overall public health risk from these viruses remains stable. Sustained human-to-human transmission is assessed as low, though sporadic cases are expected due to animal circulation.
• Specific virus risks:
  • A(H5N1) viruses continue to be detected in multiple regions, leading to human cases with potential for international spread, but no evidence of easy transmission.
  • A(H9N2) viruses are enzootic in poultry, with human cases typically mild and linked to animal contact.
  • A(H1N1) variant viruses show no sustained human-to-human transmission.
• Recommendations: Public health measures emphasize avoiding contact with sick or dead birds and maintaining good hygiene to reduce exposure risk. Continuous surveillance and global monitoring are stressed for early detection of potential pandemics.

The assessment highlights the importance of international reporting and collaboration between animal and human health sectors to manage influenza risks.