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Safety Information by Vaccine						Print
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										Get the latest safety information from CDC on recommended U.S. vaccines – safety studies, common side effects, vaccine information statements and more.
Chickenpox (Varicella) Vaccines
COVID-19 Vaccines
Diphtheria, Tetanus, and Pertussis Vaccines
Haemophilus influenzae Type b (Hib) Vaccines
Hepatitis A Vaccines
Hepatitis B Vaccines
Human Papillomavirus (HPV) Vaccine
Influenza (Flu) Vaccines
Measles, Mumps, Rubella (MMR) Vaccines
Measles, Mumps, Rubella, Varicella (MMRV) Vaccines
Meningococcal Vaccines
Mpox Vaccine
Pneumococcal Vaccines
Polio Vaccine
Respiratory Syncytial Virus (RSV) Vaccine
Rotavirus Vaccine
Shingles (Herpes Zoster) Vaccines
Smallpox Vaccineimage of a vaccine syringeCommon Vaccine Safety Questions and ConcernsThese pages will help answer common questions about vaccine safety.Related LinksInformation for Parents and Caregivers
Vaccine Safety Information for Healthcare Providers
Common Vaccine Safety Questions and Concerns
							
					
							Last Reviewed:  February 12, 2024						Source: 	Centers for Disease Control and Prevention, National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Division of Healthcare Quality Promotion (DHQP)
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Safety Information by Vaccineplus icon
Chickenpox (Varicella) Vaccines
COVID-19 Vaccines
Diphtheria, Tetanus, and Pertussis Vaccines
Haemophilus influenzae type b (Hib) Vaccines
Hepatitis A Vaccines
Hepatitis B Vaccines
Human Papillomavirus (HPV) Vaccineplus icon
Questions about HPV Vaccine Safety
Influenza (Flu) Vaccines
Measles, Mumps, Rubella (MMR) Vaccinesplus icon
MMR Safety Studies
Measles, Mumps, Rubella, Varicella (MMRV) Vaccinesplus icon
VSD MMRV Safety Study
MMRV Safety Studies
MMRV and Febrile Seizures
Meningococcal Vaccines
Mpox Vaccines
Pneumococcal Vaccines
Polio Vaccine
Respiratory Syncytial Virus (RSV) Vaccine
Rotavirus Vaccine
Shingles (Herpes Zoster) Vaccines
Smallpox Vaccines
Questions and Concernsplus icon
Adjuvants
Autismplus icon
CDC Statement: 2004 Pediatrics Paper on MMR and Autism
Fainting after Vaccination
Febrile Seizures
Guillain-Barre Syndrome
Multiple Vaccinations at Once
Sudden Infant Death Syndrome (SIDS)
Thimerosalplus icon
CDC Study (2010 ) on Thimerosal and Risk of Autism
Thimerosal FAQs
Related Scientific Articles
Infant and Environmental Exposures to Thimerosal 2007 Study
Timeline: Thimerosal in Vaccines
Vaccines During Pregnancy FAQs
FAQs about Vaccine Recalls
Historical Vaccine Safety Concernsplus icon
GBS and Menactra Vaccine FAQs
Gardasil Vaccine Recall (2013) FAQs
Hep B and Multiple Sclerosis FAQs
Hib Vaccine Recall (2007) Summary
Narcolepsy Following Pandemrix Influenza Vaccination in Europe
Information for Healthcare Providersplus icon
Talking to Patients About Vaccine Safety
Reporting Adverse Events
Resources for Healthcare Providers
Information for Parents and Caregiversplus icon
Vaccine Safety FAQs
Researchplus icon
Publications
Partner Reports on Vaccine Safety
ISO Scientific Agenda
Ensuring Safetyplus icon
Overview, History, and How It Works
Side Effects and Adverse Events
Vaccine Safety Monitoringplus icon
Vaccine Adverse Event Reporting System (VAERS)
CISAplus icon
CISA Resources for Healthcare Professionals
Evaluation
Clinical Research Studies
Historical Background 2001-12
Publications
Technical Reports
Vaccine Safety Datalink (VSD)plus icon
Accessing Data from Vaccine Safety Datalink
Data Sharing Guidelines
Vaccine Safety Datalink Publications
V-safe
V-safe Publications
Emergency Preparedness
Vaccine Safety Partners
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