H5N1 Avian Influenza Found in Skuas in Antarctica
Author Information
Author(s): Bennett-Laso Benjamín, Berazay Bárbara, Muñoz Gabriela, Ariyama Naomi, Enciso Nikita, Braun Christina, Krüger Lucas, Barták Miloš, González-Aravena Marcelo, Neira Victor
Primary Institution: Universidad de Chile
Hypothesis
Is H5N1 avian influenza present in Antarctic wildlife?
Conclusion
The study confirmed the first recorded HPAI H5N1 mortality event in skuas in Antarctica.
Supporting Evidence
- All samples from Fildes Peninsula tested negative for HPAI.
- All skua samples from James Ross Island tested positive for HPAI H5N1.
- This is the first recorded HPAI-related mortality event in Antarctica.
- High viral loads were indicated by low CT values in positive samples.
Takeaway
Researchers found a virus that can make birds sick in some skuas in Antarctica, but not in other animals they checked.
Methodology
Surveillance program conducted from December 2023 to March 2024, involving sample collection from marine birds and mammals.
Limitations
Further genetic analysis and sequencing are necessary to fully understand the virus's impact.
Digital Object Identifier (DOI)
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