これ日本では話題にならないのだろうな

　⇒Drop of Flu Vaccine Under Tongue Bars Infection - washingtonpost.com

A drop of vaccine placed under the tongue might one day ward off the flu.
　
Not only would the new method, so far tested only in mice, be more convenient, it also appears to be more effective than the flu shot or nasal spray, the South Korean researchers noted.