tetano
Editor, Senior Moderator
Emerg Infect Dis
. 2021;27(12):3045-3051.
doi: 10.3201/eid2712.210298.
Characterization of Swine Influenza A(H1N2) Variant, Alberta, Canada, 2020
Jamil N Kanji, Kanti Pabbaraju, Matthew Croxen, Susan Detmer, Nathalie Bastien, Yan Li, Anna Majer, Hussein Keshwani, Nathan Zelyas, Ifeoma Achebe, Corinne Jones, Maureen Rutz, Angela Jacobs, Keith Lehman, Deena Hinshaw, Graham Tipples
Abstract
Influenza strains circulating among swine populations can cause outbreaks in humans. In October 2020, we detected a variant influenza A subtype H1N2 of swine origin in a person in Alberta, Canada. We initiated a public health, veterinary, and laboratory investigation to identify the source of the infection and determine whether it had spread. We identified the probable source as a local pig farm where a household contact of the index patient worked. Phylogenetic analysis revealed that the isolate closely resembled strains found at that farm in 2017. Retrospective and prospective surveillance using molecular testing did not identify any secondary cases among 1,532 persons tested in the surrounding area. Quick collaboration between human and veterinary public health practitioners in this case enabled a rapid response to a potential outbreak.
Keywords: Alberta; Canada; H1N2; influenza; influenza A; pandemic potential; respiratory infections; swine; swine influenza; variants; viral zoonoses; zoonoses; zoonotic infections.
. 2021;27(12):3045-3051.
doi: 10.3201/eid2712.210298.
Characterization of Swine Influenza A(H1N2) Variant, Alberta, Canada, 2020
Jamil N Kanji, Kanti Pabbaraju, Matthew Croxen, Susan Detmer, Nathalie Bastien, Yan Li, Anna Majer, Hussein Keshwani, Nathan Zelyas, Ifeoma Achebe, Corinne Jones, Maureen Rutz, Angela Jacobs, Keith Lehman, Deena Hinshaw, Graham Tipples
- PMID: 34808085
- DOI: 10.3201/eid2712.210298
Abstract
Influenza strains circulating among swine populations can cause outbreaks in humans. In October 2020, we detected a variant influenza A subtype H1N2 of swine origin in a person in Alberta, Canada. We initiated a public health, veterinary, and laboratory investigation to identify the source of the infection and determine whether it had spread. We identified the probable source as a local pig farm where a household contact of the index patient worked. Phylogenetic analysis revealed that the isolate closely resembled strains found at that farm in 2017. Retrospective and prospective surveillance using molecular testing did not identify any secondary cases among 1,532 persons tested in the surrounding area. Quick collaboration between human and veterinary public health practitioners in this case enabled a rapid response to a potential outbreak.
Keywords: Alberta; Canada; H1N2; influenza; influenza A; pandemic potential; respiratory infections; swine; swine influenza; variants; viral zoonoses; zoonoses; zoonotic infections.