The First Bee Vaccination, also known as, Paenilbacillus Larvae Bacterin, works by a royal jelly. The vaccine gets inserted into this royal jelly, providing a dead version of the bacteria. The royal jelly works by being fed to the queen bee, going into her ovaries. By the royal jelly being in the queens ovaries, it gets fed to the newly hatched honeybee larvae to protect them from the most commonly honeybee killing disease called 'foulbrood'. 

The First Bee Vaccination, or Paenilbacillus Larvae Bacterin, is a solution by bringing the death rate of bees down in rapid ways. Overall, bees pass away from many different things from climate change to pesticides, but it has been noticed that bees are very commonly killed by the disease 'foulbrood', which this vaccination puts the end to. While this vaccine helps the bees from passing at an extreme rate, it doesn't harm the honey or queen bee in any way, causing everything to be safe.