Dogs need to be vaccinated every year?

Do dogs need to be vaccinated every year? Since vaccines are usually only effective for one year, it is best to get them every year. Puppies need to be vaccinated first with multiple vaccinations, three times before and after, one month apart, followed by a rabies vaccination when the dog is three months old. For adult dogs, one vaccination per year is sufficient. When a dog reaches a certain age, its body function declines severely and it is too weak to withstand the antibodies of the vaccine. This is when vaccinations need to be stopped to avoid causing harm to the dog.