Earlier this week, Chile announced the detection of positive cases of highly pathogenic avian influenza (H5N1) in Antarctica during the LX Antarctic scientific expedition (ECA 60) organized by the Chilean Antarctic Institute (INACH).
Positive cases of avian influenza found in Adélie penguins for the first time (Adelia beetle) and Antarctic cormorants (Bransfield Bright Carbon), marking a milestone in wildlife health research in the region. The discovery was made by the Millennium BASE Institute of Antarctic and Subantarctic Ecosystems (Millennium BASE Institute) in collaboration with the French company PONANT, with the participation of an international research team led by Dr. Elie Poulin and Dr. Juliana Vianna. In collaboration with Dr. Céline LeBohec of the University of Montpellier, France.
The samples were taken with international support from the ship at 13 breeding sites on the Antarctic Peninsula and the west coast of the White Continent. Commander Charcot. Dr. Fabiola León, a researcher at the Universidad Católica de Chile and the Molecular Biodiversity Laboratory of the University of California, conducted a high-sensitivity PCR analysis and detected 9 cases of highly pathogenic avian influenza (H5N1) in penguins and cormorants, the first time these two cases have been documented. species all live in Antarctica.
In addition to this epidemiological surveillance work, national researchers also conducted surveillance near the Czech Johann Gregor Mendel base on James Ross Island. In early March, unusual deaths of skuas were reported here, which alerted a team of virologists from the National Antarctic Science Program (Procien) at the INACH Professor Giulio Escudero Base.The equipment has been moved to the ship Jane Quio
The Chilean Navy conducted corresponding sampling. On Tuesday, it was finally confirmed that the samples collected tested positive for the avian influenza virus.These analyzes are part of the INACH collaboration “Identification and characterization of HPAIV H5N1 in Antarctica”, led by Dr. Marcelo González, Head of the Scientific Department at INACH. The tests were performed at the Escudero site by veterinarians specializing in molecular diagnostics, led by Dr. Víctor Neira of the Laboratory of Animal Virology (FAVET) of the University of Chile.
Since the beginning of surveillance of highly pathogenic avian influenza viruses in birds in Antarctica, the Scientific Committee on Antarctic Research (SCAR) has developed a project to monitor viruses in the Antarctic and sub-Antarctic regions, and this work is ongoing and systematic from Chile. conduct.
These findings highlight the importance of collaboration and scientific research in Antarctica to understand and mitigate risks associated with bird disease in the region.
INACH is a technical organization of the Ministry of Foreign Affairs with full autonomy in matters related to the nature of Antarctic science, technology and communication. INACH adheres to national Antarctic policy, encourages the development of excellent research, participates effectively in the Antarctic Treaty System and related forums, strengthens the Magellanic Islands as a gateway to the White Continent, and carries out actions to disseminate Antarctic knowledge to citizens. INACH organizes the National Antarctic Science Program (PROCIEN).
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