Vaccine Facts

It’s important to have the facts as you make health decisions for yourself and your family. Here you’ll find trustworthy, science-based resources and information vetted by practicing physicians and public health professionals on the safety and effectiveness of immunizations.

Click here for details on COVID-19 vaccine.

Below are just a fraction of the scientific and academic studies and reports on vaccines from the past 20 years. Reading such studies can be difficult. However, the abstracts and conclusions can be helpful in understanding the basis of the studies and what outcomes were determined.

Measles, Mumps, Rubella Vaccination and Autism: A Nationwide Cohort Study – Annals of Internal Medicine (April 2019)

The MMR Vaccine and Autism – Annual Review of Virology (April 2019)

Sudden Infant Death Syndrome, Attention-deficit/Hyperactivity Disorder and Vaccines: Longitudinal population analyses – Vaccine (January 2018)

Association Between Estimated Cumulative Vaccine Antigen Exposure Through the First 23 Months of Life and Non–Vaccine-Targeted Infections From 24 Through 47 Months of Age – The Journal of the American Medical Association (March 2018)

Blood and Hair Aluminum Levels, Vaccine History, and Early Infant Development: A Cross-Sectional Study – Academic Pediatrics (March 2018)

Evidence Refuting the Existence of Autoimmune/Autoinflammatory Syndrome Induced by Adjuvants (ASIA) – The Journal of Allergy and Clinical Immunology: In Practice (Nov.-Dec. 2017)

Lack of Broad Functional Differences in Immunity in Fully Vaccinated vs. Unvaccinated Children – Pediatric Research (December 2016) 

Autism Occurrence by MMR Vaccine Status Among US Children With Older Siblings With and Without Autism – Journal of the American Medical Association (April 2015)

Seizures, Encephalopathy, and Vaccines: Experience in the National Vaccine Injury Compensation Program – The Journal of Pediatrics (March 2015)

Vaccines Are Not Associated with Autism: An evidence-based meta-analysis of case-control and cohort studies – Vaccine (June 2014)

Number of Antigens in Early Childhood Vaccines and Neuropsychological Outcomes at Age 7–10 Years – Pharmacoepidemiology & Drug Safety (July 2013)

Pharmacokinetic Modeling as an Approach to Assessing the Safety of Residual Formaldehyde in Infant Vaccines – Vaccine (June 2013)

Lack of Association Between Acellular Pertussis Vaccine and Seizures in Early Childhood – Pediatrics: The Official Journal of the American Academy of Pediatrics (August 2010)

On-time Vaccine Receipt in the First Year Does Not Adversely Affect Neuropsychological Outcomes – Pediatrics: The Official Journal of the American Academy of Pediatrics (June 2010)

The Problem With Dr Bob’s Alternative Vaccine Schedule – Pediatrics: The Official Journal of the American Academy of Pediatrics (January 2009)

Lack of Association between Measles Virus Vaccine and Autism with Enteropathy: A Case-Control Study – PLOS ONE (September 2008)

Sudden Infant Death Syndrome: No increased risk after immunisation – Vaccine (January 2007)

Absence of Detectable Measles Virus Genome Sequence in Blood of Autistic Children Who Have Had Their MMR Vaccination During the Routine Childhood Immunization Cchedule of UK – Journal of Medical Virology (March 2006)

MMR Vaccination and Pervasive Developmental Disorders: A Case-control Study – The Lancet (September 2004)

Thimerosal Exposure in Infants and Developmental Disorders: A Retrospective Cohort Study in the United Kingdom Does Not Support a Causal Association – Pediatrics: The Official Journal of the American Academy of Pediatrics (September 2004)

Safety of Thimerosal-Containing Vaccines: A Two-Phased Study of Computerized Health Maintenance Organization Databases – Pediatrics: The Official Journal of the American Academy of Pediatrics (November 2003)

A Population-Based Study of Measles, Mumps, and Rubella Vaccination and Autism – New England Journal of Medicine (November 2002)

Addressing Parents’ Concerns: Do Multiple Vaccines Overwhelm or Weaken the Infant’s Immune System? – Pediatrics: The Official Journal of the American Academy of Pediatrics (January 2002)

Autism and Measles, Mumps, and Rubella Vaccine: No Epidemiological Evidence for a Causal Association – The Lancet (June 1999)

Risk of Serious Acute Neurological Illness After Immunization With Diphtheria-Tetanus-Pertussis Vaccine: A Population-Based Case-Control Study – The Journal of the American Medical Association (January 1994)