. How do vaccines work? Parents are constantly concerned about their children's health and safety. Most parents try to protect their children in many ways, such as child-proof door latches. Vaccines work the same way. They protect children from illnesses and death caused by diseases. Vaccines prepare the body to fight serious cases of deathly diseases. The vaccine enters the body and introduces a disease into the bloodstream. B-cells create antibodies. The person becomes immune to the disease. Vaccinations have the same effect as regular diseases, except they do not make the patient suffer. "Vaccines are safe because the viruses or bacteria used in vaccines have been severely compromised in a laboratory by one of several strategies." says wiseGEEK, an informational web site. The diseases below can be prevented through vaccination. Anthrax Cervical Cancer Diphtheria Hepatitis A Hepatitis B Haemophilus influenzae B (Hib) Human Papillomavirus (HPV) Influenza (Flu) Japanese Encephalitis (JE) Lyme Disease Measles Meningococcal Monkeypox Mumps Pertussis (Whooping Cough) Pneumococcal Poliomyelitis (Polio) Rabies Rotavirus Rubella (German Measles) Shingles (Herpes Zoster) Smallpox Tetanus (Lockjaw) Tuberculosis Typhoid Fever Varicella (Chickenpox) Yellow Fever