About a year http://www.foolsfestival.com/2013/ paxil 10 mg withdrawal  ﾂ�ﾂ�ﾂ� "There is also new this year, in addition to inactive and attenuated vaccines, is what is called influenza recombinant vaccine. This vaccine is actually developed by taking new DNA and cell culture technology of the virus and turning it into a vaccine," said McLaughlin "The nice thing about this one is that it is produced in an egg-free environment, so it is available to people with egg allergies."