Flu vaccines are about to get more painful for a lot of people. A CDC advisory committee recommended that FLUMIST, the nasal spray influenza vaccine should not be used during the upcoming flu season. The committee found FLUMIST performed quite poorly compared to the injectable vaccine. An alternative to the standard flu shot, FLUMIST was approved by the FDA in 2003 for people between the ages of 2 and 49. The decision must now be approved by the CDC director before taking effect.