The main problem with vaccination, when you're on the receiving end, is that needles are involved. (And I guess that in some settings, that means re-used needles which are blunt, painful and likely contaminated with all sorts of biological and chemical hazards). So well done the scientists who have a developed a novel method of getting the vaccine in via sticky patches instead of needles.
Meanwhile the plucky influenza virus continues its ongoing resistance to our anti-flu efforts. The latest is whether to use live attenuated virus or inactivated virus. Tricky stuff but emphasises the importance of ongoing surveillance.
All of this summarised in a useful editorial.