What was the experience in 2010 in the Southern Hemisphere when using flu vaccines made by CSL Biotherapies?
Australia and New Zealand are the only two Southern Hemisphere countries to use CSL Biotherapies seasonal flu vaccine during the 2010 flu season. During the 2010 flu season in Australia, administration of seasonal flu vaccine manufactured by CSL Biotherapies (brand names Fluvax and Fluvax Junior) was associated with increased frequency of fever and febrile seizures in children aged 6 months through 4 years old. In Australia, fever in children aged 5 through 8 years has also been reported following vaccination with Fluvax. Extensive investigations by Australian authorities have indicated that administration of CSL flu vaccine in 2010 was associated with fevers and febrile seizures in young children in the 4-24 hours following vaccination at higher rates than was observed with seasonal flu vaccine during previous years in Australia. On April 23, 2010, seasonal flu vaccination of otherwise healthy children 5 years and younger was suspended in Australia by the Chief Medical Officer. Simila
