I know that developing a vaccine for a new virus can be difficult. A lot of effort has gone into an HIV vaccine, but so far they don't seem to have nailed it down.
I know that flu viruses mutate frequently, requiring newly-generated vaccines each year. And I know it's a guessing game each year for the vaccine designers, as they try to figure out which versions of the virus they need to prevent.
Nonetheless, I keep wondering if government involvement has something to do with these periodic delays and shortages in producing annual supplies of flu vaccine. The government sure is involved, as a major purchaser as well as a regulator.
Our leaders may shout: Go go go!
But regulation makes things slow.