Human Immunity and Susceptibility to Influenza A(H3) Viruses of Avian, Equine, and Swine Origin

Details

• Alternative Title:
  Emerg Infect Dis
• Personal Author:
  Vandoorn, Elien ; Stadejek, Wojciech ; Leroux-Roels, Isabel ; Leroux-Roels, Geert ; Parys, Anna ; Van Reeth, Kristien
• Description:
  Influenza A viruses (IAVs) of subtype H3 that infect humans are antigenically divergent from those of birds, horses, and swine. Human immunity against these viruses might be limited, implying potential pandemic risk. To determine human risk, we selected 4 avian, 1 equine, and 3 swine IAVs representing major H3 lineages. We tested serum collected during 2017-2018 from 286 persons in Belgium for hemagglutination inhibiting antibodies and virus neutralizing antibodies against those animal-origin IAVs and tested replication in human airway epithelia. Seroprevalence rates for circulating IAVs from swine in North America were >51%, swine in Europe 7%-37%, and birds and equids ≤12%. Replication was efficient for cluster IV-A IAVs from swine in North America and IAVs from swine in Europe, intermediate for IAVs from horses and poultry, and absent for IAVs from wild birds and a novel human-like swine IAV in North America. Public health risk may be highest for swine H3 IAVs.
• Subjects:
  Animals Birds Horses Humans Influenza, Human Influenza A Virus Orthomyxoviridae Infections Seroepidemiologic Studies Swine Swine Diseases
• Source:
  Emerg Infect Dis. 2023; 29(1):98-109
• Pubmed ID:
  36573615
• Pubmed Central ID:
  PMC9796212
• Document Type:
  Journal Article
• Volume:
  29
• Issue:
  1
• Collection(s):
  Emerging Infectious Diseases
• Main Document Checksum:
  urn:sha256:bb669358cf96c7d32aa64cc1c42c936f0a24ce0d657cda24e94e3a1be96e88ce
• Download URL:
  https://stacks.cdc.gov/view/cdc/127633/cdc_127633_DS1.pdf
• File Type:
  [PDF - 3.13 MB ]