In children neurologic complications associated with influenza virus infection frequently present as febrile seizures with or without further signs of central nervous system involvement (Maricich SM et al., Pediatrics 2004; 114: e626–e633). Influenza A is a common viral cause of febrile seizures, however it remains unclear, if different types trigger seizures more likely than others. During the pandemic of the novel influenza A (H1N1) virus starting in April 2009, seizures were the most common neurologic complication among infected children (Ekstrand JJ et al., Ann Neurol 2010; 68: 762–766; Landau YE et al., Pediatr Neurol 2011; 44: 47–51). We therefore hypothesized, that the number and rate of febrile seizures must have increased during the pandemic months compared to previous years. We further investigated febrile seizure patients with suspected influenza A (H1N1) infection focusing on the difference between patients with positive vs. negative H1N1-test results.