Rabies viruses doesn’t spread through bloodstream,instead it creeps through the nervous system at a rate of about two to ten centimeters a day until it reaches the brain. Once it gets there it induces an inflammation for which there is no cure.
so vaccine is effect for these days until it reaches brain. hydrophobia, or fear of water, is a unique symptom of rabies.
The time period between contracting the disease and the start of symptoms is usually one to three months; however, it can vary from less than one week to more than one year.
Once the symptoms appear, the person rarely survives the disease, even with treatment. Death from respiratory failure usually occurs within 7 days after symptoms start.