These vaccinations prevent life-threatening viruses that a young child's immune system might have trouble fighting off on its own. Vaccines are administered through an injection or oral dose and four different types are currently available. Weakened and inactivated viruses are injected in some vaccines. Other vaccines contain toxins produced by disease-causing bacteria or biosynthetic substances. After the virus's introduction into the child's body, the child's immune system produces antibodies to fight off the weakened, dead, or synthetic virus.
Vaccinations are safe, but rare extreme reactions do occur.
The long-term benefits of immunizing your child far outweigh the risks of any reactions. Some mild side effects like slight fever or tenderness around the injection may occur. These can be treated with acetaminophen or ibuprofen for pain relief. To make the procedure easier for both parent and child physicians suggests planning a fun activity after the injection so the experience is not totally unpleasant. Parents should delay an immunization if their child is sick with anything more than the common cold.