There was already a botulism vaccine in the early ’70s. I know this because I knew folks who were doing research on botulism, and they were very careful to keep their immunity “current”.
They said that the reason the vaccine wasn’t in wider use was that for it to be effective it had to be repeated frequently (several times a year) and that it was “only slightly more painful than rabies shots”.
There was already a botulism vaccine in the early ’70s. I know this because I knew folks who were doing research on botulism, and they were very careful to keep their immunity “current”.
They said that the reason the vaccine wasn’t in wider use was that for it to be effective it had to be repeated frequently (several times a year) and that it was “only slightly more painful than rabies shots”.