Vaccines protect us against deadly diseases like measles, mumps and whooping cough. When you receive a vaccine it helps your body create antibodies. Sometimes your body can create antibodies on its own. But the diseases you get vaccines for are very dangerous.
Most people get very sick and some die before enough antibodies are produced.
This vaccine protects us from the Haemophilus Influenza type b bacteria. Also this bacteria can infect the blood, joints, bones, muscles, throat and the cover surrounding the heart. This is especially dangerous for babies. The D in DTP stands for Diphtheria. Diphtheria is an infection that attacks the throat, mouth and nose.