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Vaccine Information
Why Immunize?
General Questions on Immunization
Immunization Schedules
Important Facts for Parents to Know about Childhood Vaccines
Frequently Asked Questions on Childhood Vaccines
CDC Vaccine Information Statements
Guide to Internet and Hotline Resources
Evaluating Information on the Web
Pictures of Vaccine-Preventable Diseases
State Vaccine Requirements
Health Professionals
Policy Makers
General Questions on Immunizations
Ever wonder how vaccines work? What they contain? If they are safe? This list of questions links to straightforward answers from the NNii resource kit — Communicating with Patients about Immunization.

Vaccine Effectiveness
  • How do we know that vaccines work?
  • Is it better to be naturally infected rather than vaccinated?
  • Because of better hygiene and sanitation, hadn't diseases already begun to disappear before vaccines were introduced?
  • During an outbreak, aren't the majority of people who catch a disease those who have been vaccinated?
  • If vaccine-preventable diseases have been virtually eliminated from the United States, why do American children need to be vaccinated?
Vaccine Safety
  • Are vaccines safe?
  • What does the FDA do to ensure that vaccines are safe?
  • How are vaccines tested?
  • How is the safety of vaccines monitored?
Adverse Events that Follow Vaccination
  • What is the Vaccine Adverse Events Reporting System (VAERS)?
  • What is the Vaccine Safety Datalink (VSD) Project?
  • Are there "hot lots" of vaccines that have been associated with more adverse events than others?
  • Are some people more susceptible to adverse reactions than other people?
  • If one person in a family has an adverse reaction to a vaccine, will other members of the family also have the same reaction?
  • Can vaccines cause permanent adverse events, such as long-lasting impairment, or death?
Vaccine Injury Compensation Program
  • If a person may have been harmed by a vaccine, what does the federal government do about it?
Vaccine Ingredients
  • What is a vaccine made of? Are any of the ingredients in vaccines harmful?
  • Are vaccines made from animal tissue safe? Can they transmit infectious agents to people?
Vaccine Research and Development
  • Who sponsors the research and development of a new vaccine?
  • Is enough research conducted before vaccines are licensed by the Food and Drug Administration?
  • Does the research process end when a vaccine is licensed by the Food and Drug Administration?
  • Do any of the people who serve on federal advisory committees receive research support from pharmaceutical companies?
Vaccine Recommendation Policies
  • Who decides which vaccines should be routinely recommended for children and adults?
School Immunization Laws
  • Why does the government require that certain vaccines be given to children?
  • Are there legal consequences for parents if they choose not to vaccinate their children?

State Vaccine Requirements
Click here to go to the state requirements database.

Immunization Doses and Schedules
  • Who decides which vaccines children should receive?
  • Are infants too young to get vaccinated?
  • Does giving a child multiple vaccines for different diseases at the same time increase the risk of harmful side effects?
  • Is it okay for parents to decide not to give their children certain vaccines?
  • To reduce the chance of side effects, is it acceptable for a child to receive a half dose of a vaccine?
Vaccine Registries
  • What are vaccine registries?
  • Some states are creating vaccine registries. Why is this necessary?
The Immune System and Vaccines
  • How do vaccines work?
  • Do vaccines "use up" or overload the immune system in infants or children?
  • Do vaccines weaken the immune system?
Alternatives to Vaccines
  • Doesn't breastfeeding offer babies natural protection?
  • Are there natural remedies (e.g., herbs, vitamins) or approaches (e.g., homeopathy) that can be used in lieu of manufactured vaccines?
© Copyright National Network for Immunization Information. The information contained in the National Network for Immunization Information Web site should not be used as a substitute for the medical care and advice of your health care provider. There may be variations in treatment that your health care provider may recommend based on individual facts and circumstances.