Investigations are underway by the health authorities, in order to determine the circumstances of the infection and to establish a list of people who have been in contact with the patient.
At this stage, a link between the infection and the exposure of the individual to live pigs in the week prior to symptom onset cannot be confirmed. No other symptomatic person was detected in the close entourage of the patient.
Due active circulation in pig farms of a strain viral similar to the virus involved in this infection, health professionals in the region were asked to carry out a systematic search for influenza viruses in anyone in contact with pigs, and showing symptoms of acute respiratory infection (fever, sore throat, headache, cough).
A course of action will soon be published for healthcare professionals on the website of Public health France.
ANSES was mandated to conduct epidemiological investigations in the breeding of pigs believed to be the source of the contamination.
Cases of influenza virus transmission to humans have already been sporadically detected internationally. Since January 2021, around ten cases of human infection with A (H3N2) v, A (H1N1) v and A (H1N2) v viruses of porcine origin have been confirmed in the United States, Canada, Taiwan, Denmark and Germany.
Human cases of infection with porcine influenza viruses are generally mild, although a few severe cases have been reported, and no sustained human-to-human transmission chain has been reported to date. Being the source of respiratory infections, the influenza virus of porcine origin is not transmissible to humans through the consumption of meat of pig origin, more generally through food..
–
