I know many things are dangerous or have side effects, but FYI, there has been controversy over flumist and kids since it's inception in 2001. I think the most controversial thing is it contains the live virus which can make your child sick with the flu and is transmittable.
Doctors are pushing flumist because there is a huge advertising campaign by the pharma company that produces it and it is easier to administer than a shot.
However, there are many reasons for caution. FluMist contains live (attenuated) influenza viruses that replicate in the nasopharynx of the vaccine recipient. The most common side effects include "cough, runny nose/nasal congestion, irritability, headaches, chills, muscle aches and fever > 100° F."[6] These symptoms are nearly identical to those the flu vaccine is designed to prevent. [7]
A cause for significant concern is the vaccine’s most prevalent side effects: "runny nose" and "nasal congestion." It has been documented that the live viruses from the vaccine can be shed (and potentially spread into the community) from recipient children for up to 21 days,[8] and even longer from adults.[9] Viral shedding also puts breastfeeding infants at risk if the mother has been given FluMist.[10]
In addition to shedding via nasal secretions, the virus can be dispersed through sneezing. What is the normal physiological response when an irritant enters the nasal passages? A sneeze…sometimes a big sneeze…sometimes several big sneezes. Therefore, the risk for shedding–and spreading–live viruses throughout a school, church, workplace, or store — especially one which is administering the vaccine. In the section of the FlumMist package insert labeled "PRECAUTIONS," the manufacturer states the following warning:
"FluMist® recipients should avoid close contact with immunocompromised individuals for at least 21 days."
One of the most troubling concerns over the injection of this "chemical soup" is the potential for the viruses to enter directly into the brain. At the top of the nasal passages is a paper-thin bone called the cribriform plate. The olfactory nerves pass through this bone and line the nasal passages, carrying messenger molecules to the brain that are identified as "smells" familiar to us. The olfactory tract has long been recognized as a direct pathway to the brain.
Intranasal injection of certain viruses has resulted in a serious brain infection called encephalitis, presumably by direct infection of the olfactory neurons that carried the viruses to the brain.[19] Time will tell whether the live viruses in FluMist will become linked to cases of encephalitis.
I'm sure this is very rare, but...
FYI: I don't recommend any vaccines, but it's your decision and your choice.