You have to understand that rabies does not fall from the sky, nor is it carried by animals, nor is it transmitted from mother to child. Animals are bitten by crazy animals and get rabies. You won't be born without this question.
The ratio of "100" is meaningless.
First of all, you should know that healthy dogs will not spread rabies, that is, the so-called healthy dogs are not poisonous. Don't be bitten by a sick dog, the dog is nontoxic!
When rabies attacks, cats and dogs die within 100 days, so there are no so-called long-term healthy carriers.
Even if the dog carries rabies virus, it is not contagious before the dog gets sick. (If you want to be infected, you must have rabies within 10 days. )
There are many kinds of viruses in people, but now that you are healthy and have no diseases, you are not a patient, and I can't say that you are unhealthy with viruses.
So is rabies. This disease will not be transmitted to you even if you carry rabies virus in the incubation period. Only at the end of the incubation period and during the onset, rabies virus will appear in animal saliva, which is contagious.
Secondly, the question "How much is 100" is an uncertain small number, and no one can answer it. Epidemic areas and non-epidemic areas are different, and there are also differences in different areas of the same epidemic area or in different areas of a region. Epidemic area refers to the fact that animals or people have rabies in this area in recent years.
Third, the incubation period of rabies in dogs is 6 months at the longest. So, if you enclose a dog and keep it out of contact with the outside world, if your dog doesn't get sick within 6 months, your dog doesn't even have a chance to carry rabies virus. (Because of this, even in the strictest rabies-free country, if you want to bring your dog into the country, the national animal immunization only needs to observe your dog in isolation for 6 months, so you can think that your dog is rabies-free and can enter the country. )
To be honest, I don't quite understand what you're asking. . . . . . .