Asides for the whole shedding issue (which is a huge concern). I would also be concerned about the ingredients. Just because something is not injected, doesn't mean it's safe.
The nasal passages are delicate and the tissue there is very permeable.
Each dose of flumist contains 10 6.5-7.5 particles of live, attenuated influenza virus. That means that between 10 million and 100 million viral particles will be forcefully injected into the nostrils when administered. The viral strain was developed by serial passage through "specific pathogen-free primary chick kidney cells" and then grown in "specific pathogen-free eggs." That means that the culture media was free of pathogens that were specifically tested for, but not a culture that was necessarily "pathogen-free." Each dose of flumist contains
0.188 mg monosodium glutamate, (http://www.msgtruth.org/ ) 2.00 mg hydrolyzed porcine gelatin,( Porcine gelatin, or pork gelatin, is made from the leftover parts of a pig after slaughter, and is used in many products as a stabilizer.) 2.42 mg arginine, 13.68 mg sucrose, 2.26 mg dibasic potassium phosphate, 0.96 mg monobasic potassium phosphate (a buffering agent) that can cause "CAUSE IRRITATION TO SKIN, EYES, AND RESPIRATORY TRACT. MAY BE HARMFUL IF SWALLOWED OR INHALED." (from MSDS) , and <0.015 mcg/mL gentamicin sulfate which is an antibiotic.
Dr Tenpenny also warns of the dangers of flumist.
Quote:
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
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