Spain has alerted the World Health Organisation (WHO) to a suspected human-to-human transmission of the A(H1N1)v swine flu variant in Catalonia, regional health authorities confirmed Friday.
The infected person, who has since recovered, showed no flu-like symptoms, and tests on direct contacts indicated no retransmission.
An El Pais report, citing Catalan health department sources, said that the patient had no contact with pigs, leading experts to conclude that human-to-human transmission had occurred.
This raised concerns over the virus’s pandemic potential if it recombines with a human flu strain in a simultaneously infected pig.
However, the Catalan health department later assessed the risk to the population as “very low”.
The WHO did not immediately reply to a request for comment.
In 2023, the Netherlands notified the WHO of a confirmed human infection with a swine influenza A(H1N1)v virus in an adult with no history of occupational exposure to animals.
In 2009, the swine flu pandemic in humans infected millions of people. It was caused by a virus that contained genetic material from viruses that were circulating in pigs, birds and humans.
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