Is There a Difference Between Aluminum That Is Injected vs. Ingested?
Paul A. Offit, MD, explains the difference between aluminum injected in a vaccine and aluminum ingested through food and water.
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Are Fetal Cells Used to Make Vaccines?
Paul A. Offit, MD, discusses the use of fetal cells to make vaccines and the Catholic Church’s interpretation of the use of vaccines made in this manner.
Is There Mercury in Vaccines?
Paul A. Offit, MD, explains the different types of mercury and how they are processed in the human body. He also discusses which commonly recommended infant vaccines still contain mercury-associated preservatives.
Do Vaccines Cause Allergies?
Paul A. Offit, MD, discusses the hygiene hypothesis as it relates to vaccines and allergies in children.
Are There Vaccines that Children With Allergies Need to Avoid?
Paul A. Offit, MD, talks about potential allergens in vaccines.
What Is the Harm in Delaying or Spacing Out Vaccines?
Paul A. Offit, MD, answers the common question from parents about changing the recommended vaccine schedule.
Are Vaccines Safe?
Paul A. Offit, MD, discusses the definition of “safe” in the context of vaccination, and explains the benefits versus risks of vaccines and vaccine-preventable diseases.
Do Vaccines Cause Autoimmune or Chronic Disorders?
Paul A. Offit, MD, addresses concerns about vaccines and autoimmune diseases, such as arthritis, rheumatic fever and multiple sclerosis, and explains how we know vaccines are not the cause.
Do Vaccines Cause Autism?
Paul A. Offit, MD, addresses concerns about vaccines and autism, describing the origin and nature of the concerns and the numerous scientific studies that have addressed them.
Why Do We Still Need Vaccines?
Paul A. Offit, MD, explains why vaccines are still necessary even though vaccine-preventable diseases may not seem to be common.