狗打疫苗管什么用？
为了宝宝及孕妇健康，大多准爸爸妈妈都会给婴儿打各种疫苗，什么百白破疫苗啦、麻风疫苗啦，小儿免疫疫苗很多，人们也都习以为常。可是，你知道吗，为了宠物健康，也要给狗打免疫疫苗。这是什么道理，难道狗也会得病？其实，狗也有瘟热病、细小病毒感染病、狂犬病，给狗打疫苗，是防止此类疾病的有效措施。
为下面的文章写一篇50——70词的摘要。
Dogs， like people and other mammals， can catch many kinds of disease. Those diseases can affect people and other animals. Many kinds of bacteria that cause disease in dogs can also cause big problems for people. So it's important to learn about dog diseases and how to keep your dog and others away from them.
A dog's first shots should be given when it is 6-8 weeks old. Here are the kinds of shots and the ages they are given.
Parvovirus — 6-8 weeks
Distemper — 6.5-8.5 months
Corona — 4-6 years
Rabies — 1-3 years (older dogs may have to be tested for a disease called parvovirus)
These diseases are all common in dogs. The distemper and parvo viruses cause diseases like rabies， and can still be found even though the dogs have been vaccinated.
It's important to take your dog to the vet so he can get all of his shots. You can ask your vet about vaccinations. Some vaccinations are only given every year or every three years. Check with your vet.