Introduction
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Why get vaccinated?
Meningococcal quadrivalent conjugate vaccine may prevent serious illnesses that may occur following infection with the bacteria, Neisseria meningitidis.
Infection with Neisseria meningitidis can cause serious life-threatening illnesses like meningitis and bloodstream infections.
Meningococcal quadrivalent conjugate vaccine does not contain the bacteria. It works by triggering the body to make antibodies against the bacteria to provide a defense against potential infection.
There are different types of Neisseria meningitidis bacteria. Meningococcal quadrivalent conjugate vaccine provides protection against 4 common disease-causing types (serogroups A, C, W, and Y) therefore it does not provide complete protection.
How is the vaccine given?
Meningococcal quadrivalent conjugate vaccine comes as a solution (liquid) to be given intramuscularly (into a muscle) by a healthcare provider.
Infants 2 months of age: given as 4 doses given at 2, 4, 6, and 12 to18 months of age.
Children 6 through 23 months of age: given as 2 doses given at least 3 months apart, with the second dose given after 1 year of age.
Children and adults 2 though 55 years of age: given as a single dose.
What should you tell the person who is giving the vaccine?
Tell your vaccine provider if you:
In some cases, your health care provider may decide to postpone vaccination to a future visit.
What are the risks from vaccination?
Side effects that have been reported with meningococcal quadrivalent conjugate vaccine include:
Some side effects can be serious. If you experience any of these symptoms, call your doctor immediately or get emergency medical treatment:
People sometimes faint after medical procedures, including vaccination. Tell your provider if you feel dizzy or have vision changes or ringing in the ears.
Adverse reactions should be reported to the Vaccine Adverse Event Reporting System (VAERS). Your health care provider will usually file this report, or you can do it yourself. Visit http://vaers.hhs.gov or call 1-800-822-7967. VAERS is only for reporting reactions, and VAERS staff members do not give medical advice.
How can I learn more?
Other Information
¶ This branded product is no longer on the market. Generic alternatives may be available.
This report on medications is for your information only, and is not considered individual patient advice. Because of the changing nature of drug information, please consult your physician or pharmacist about specific clinical use.
The American Society of Health-System Pharmacists, Inc. represents that the information provided hereunder was formulated with a reasonable standard of care, and in conformity with professional standards in the field. The American Society of Health-System Pharmacists, Inc. makes no representations or warranties, express or implied, including, but not limited to, any implied warranty of merchantability and/or fitness for a particular purpose, with respect to such information and specifically disclaims all such warranties. Users are advised that decisions regarding drug therapy are complex medical decisions requiring the independent, informed decision of an appropriate health care professional, and the information is provided for informational purposes only. The entire monograph for a drug should be reviewed for a thorough understanding of the drug's actions, uses and side effects. The American Society of Health-System Pharmacists, Inc. does not endorse or recommend the use of any drug. The information is not a substitute for medical care.
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Selected Revisions: July 15, 2026.