A rare disorder characterized by a very strong sleepiness associated to a loss of muscle tone – were detected in France in people who have been immunized against influenza A/H1N1. These cases identified since August 23, were reported al’Afssaps. The people – three children and three adults – had used the vaccine Panenza ®. But for now, a link between vaccination against influenza A/H1N1 and the onset of narcolepsy has not been established.

On August 18, 2010, Sweden had informed the European Medicines Evaluation Agency (EMEA) and all member states, the occurrence of 6 cases of narcolepsy in children aged 12 to 16 years, two months after a Pandemrix Viagra here vaccination. This vaccine, who had obtained a permit for placing on the market in May 2008, has been used in France as part of the recent vaccination campaign against the pandemic influenza H1N1.

Any undesirable effect should be reported

Since the information circulated by the Swedish Agency, cases of narcolepsy were reported in Finland (6 cases) and France. To date, a total of 22 cases of narcolepsy were reported in Europe after vaccination.

Afssaps recalls that any serious adverse effect and / or unexpected, must be declared by health professionals to regional centers of pharmacovigilance (CRPV).

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