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Elephant seal censusScienceDaily
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80% Informative
A year after an outbreak of H5N1 killed thousands of elephant seals in Argentina , only about a third of the seals normally expected here returned, scientists estimate.
A study published today in the journal Nature Communications provides evidence of mammal-to-mammal transmission during the 2023 outbreak.
The outbreak in elephant seals was a stepping stone amid the first transnational spread of the virus in these species, extending across five countries in southern South America .
In October 2023 , following outbreaks in sea lions, the study authors surveyed the breeding colony of elephant seals at Punta Delgada along the coast of Península Valdés , recording unprecedented mass mortality.
Test results confirmed that HPAI H5N1 was present in the seals, as well as in several terns that died at the same time.
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