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Swine flu

Influenza viruses that emerge and circulate in pigs all have zoonotic potential, meaning they can infect humans, and sporadic cases are regularly detected. No recent cases of human-to-human transmission of these viruses have been documented.

Our missions

  • Epidemiological surveillance, validation of case classification in cases of suspected human infection with a swine influenza virus in France, confirmation of cases in collaboration with the National Reference Center for Respiratory Infections, and participation in investigations of confirmed cases, in collaboration with the Regional Health Agency (ARS).

  • Providing information to public authorities on the epidemiological situation regarding influenza viruses with zoonotic potential

Data

To date, only one case of human influenza caused by a swine-origin influenza virus (known as “swine flu”) has been detected in France, in September 2021 in the Côtes-d’Armor department: it was an infection with the A(H1N2)v virus of clade 1C.2.4. The individual had been exposed to pigs at a farm where this virus had circulated a few days before the onset of symptoms. Investigations were conducted among co-exposed individuals and contacts of the confirmed case, and no other cases were identified.

In relation to

Grippe-aviaire

Avian influenza

thematic dossier

Some avian influenza viruses can infect humans, and sporadic cases are regularly detected, but the risk of transmission remains low. No cases of human-to-human transmission have been reported...

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