Healthy dogs will not spread rabies virus ",which is completely correct in theory. However, it is actually difficult to judge whether a dog is "healthy". It is easy to cause public misunderstanding and serious consequences to publicize that "healthy dogs do not spread rabies virus".
A healthy dog does not mean that it does not carry rabies virus, but if the dog is vaccinated with enough rabies vaccine, the vaccine is normal and has not deteriorated, it will not carry rabies virus and will not be infected with rabies.