The mites aren't a vector for foulbrood though, so you can still get it even without any mites. Of course additional stresses might make them vulnerable to it too.
In this case nature invented the vaccine, giving some inactive bacteria for the queen to eat is imo no less natural than beekeeping.
Mthepotato t1_j3icvy6 wrote
Reply to comment by tdreampo in A biotech firm says the U.S. has approved its vaccine for honeybees by BorgesBorgesBorges60
The mites aren't a vector for foulbrood though, so you can still get it even without any mites. Of course additional stresses might make them vulnerable to it too.
In this case nature invented the vaccine, giving some inactive bacteria for the queen to eat is imo no less natural than beekeeping.