Among the various things, kids hate perhaps the needles used to vaccinate them against flu top the list. However, parents are helpless just like the medical communities while administering the flu vaccine and pushing the sharp needles into their tender skin. Various methods had been tried to deliver the vaccine painlessly to the body that includes both oral administration of the vaccine and nasal sprays. Both these methods of vaccination though painless have certain side effects. While the oral doses lose their efficacy when subjected to the harsh digestive enzymes as they enter the stomach, the nasal sprays can adversely affect the body’s central nervous system.





















