(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) Australian public health officials yesterday reported a cluster of oseltamivir (Tamiflu)-resistant 2009 H1N1 infections, one of the largest to date, centered in one region of New South Wales state.
(CIDRAP News) Researchers who combed through scores of serologic studies estimate that the global cumulative incidence of pandemic H1N1 influenza infection before vaccines became available was probably below 20%, far lower than the 50% that pandemic planners had envisioned as a possible worst case.
(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.
(CIDRAP News) More signals suggest the Southern Hemisphere's flu season is winding down, while activity is low at the start of the Northern Hemisphere's flu season, except in China, which is seeing moderate H3N2 circulation.
(CIDRAP News) Flu activity is showing a late-season flourish in some parts of the Southern Hemisphere, such as Chile, where levels in some areas exceed last year's pandemic peak, and in parts of Australia, the World Health Organization (WHO) said in its most rent influenza update.
(CIDRAP News) – Flu activity is continuing at various intensity levels, with India reporting more deaths, Australia reporting increasing numbers of cases late in its flu season, and transmission declining in New Zealand.