(CIDRAP News) – In a new analysis of serologic studies from 19 countries, researchers estimate that about 24% of the population were infected with the 2009 H1N1 influenza (pH1N1) virus during the first year of the pandemic, a finding modestly higher than what US health officials estimated in the immediate aftermath of the pandemic.
(CIDRAP News) – French researchers have found a significant link between one 2009 H1N1 vaccine and narcolepsy in adults, a finding that is likely to prompt some countries to take a fresh look to see if adult cases have surfaced in the wake of pandemic vaccine campaigns.
(CIDRAP News) – A five-country study from Europe indicates that the use of adjuvanted vaccines against the pandemic H1N1 influenza virus probably did not increase the risk of Guillain-Barre syndrome (GBS), but the investigators could not firmly rule out a slightly greater chance of suffering the paralytic condition.
(CIDRAP News) Flu activity is increasing in many of the Northern Hemisphere's temperate-zone countries, with influenza B cocirculating with the 2009 pandemic H1N1 virus across Europe and teaming up with influenza A (H3N2) in the United States and Canada, the World Health Organization (WHO) said in its latest update.
(CIDRAP News) In a flu vaccine update at a federal advisory meeting today, officials with the US Centers for Disease Control and Prevention (CDC) said early signs suggest flu vaccine uptake in children is on par with last year and that enhanced monitoring for narcolepsy and seizures has turned up no signals of trouble.