MenQuadfi was developed throughA novel serogroup-specific design1

OUR MULTI-STEP APPROACH:

1 in white-ruled box

Tetanus toxoid was identified as an alternative to the protein carrier used in other US-licensed MenACWY vaccines1-3

2 in white-ruled box

Individual conjugate structures were evaluated for each serogroup (A, C, W, and Y)1

3 in white-ruled box

Chemical and structural features for each serogroup achieved the demonstrated immune response1

Committed to the fight against meningococcal disease

In the US, Sanofi has been a leader in this fight for more than 40 years4

TIMELINE 1978 First & only bivalent (A,C) meningococcal vaccine; 1981 First & only quadrivalent meningococcal polysaccharide vaccine; 2005 First & only quadrivalent meningococcal conjugate vaccine liquid formulation; 2014 MenACWY vaccine licensed for 2nd dose; 2020
 MenQuadfi, protect expanded age group of individuals 2 years and older TIMELINE 1978 First & only bivalent (A,C) meningococcal vaccine; 1981 First & only quadrivalent meningococcal polysaccharide vaccine; 2005 First & only quadrivalent meningococcal conjugate vaccine liquid formulation; 2014 MenACWY vaccine licensed for 2nd dose; 2020
 MenQuadfi, protect expanded age group of individuals 2 years and older

SANOFI partners with public health stakeholders to help improve immunization rates and access to vaccines, with a heritage of innovation and partnership that will continue into the future.

IMPORTANT SAFETY INFORMATION

MenQuadfi should not be administered to anyone who has had a severe allergic reaction to any component of the vaccine, or after a previous dose of MenQuadfi or any other tetanus toxoid-containing vaccine.

Appropriate medical treatment must be immediately available to manage potential anaphylactic reactions following administration of MenQuadfi.

Some individuals with altered immunocompetence, including some receiving immunosuppressant therapy, may have reduced immune responses to MenQuadfi. Persons with certain complement deficiencies and those receiving treatment that inhibits terminal complement activation (eg, eculizumab) are at increased risk for invasive disease caused by N meningitidis, including serogroups A, C, W, and Y, even if they develop antibodies following vaccination with MenQuadfi.

Syncope (fainting) may occur in association with administration of injectable vaccines, including MenQuadfi. Procedures should be in place to avoid injury from fainting.

Guillain-Barré syndrome (GBS) has been reported in temporal relationship following administration of another US-licensed meningococcal quadrivalent polysaccharide conjugate vaccine. The decision to give MenQuadfi to persons with a history of GBS should take into account the expected benefits and potential risks.

Immunization with MenQuadfi does not substitute for routine tetanus immunization.

Vaccination with MenQuadfi may not protect all vaccine recipients.

The most common adverse reactions following primary vaccination with MenQuadfi in infants 6 weeks through 23 months of age include tenderness, erythema, and swelling at the injection site; irritability, abnormal crying, drowsiness, appetite loss, fever, and vomiting. In individuals 2 years of age and older,the most common adverse reactions include pain at the injection site; myalgia, headache, and malaise. Other common adverse reactions in children 2 through 9 years of age include erythema and swelling at the injection site. In adolescents and adults, rates of solicited adverse reactions following a booster dose were comparable to those observed following primary vaccination. Other adverse reactions may occur.

Please see the full Prescribing Information for MenQuadfi.

Click here to learn more about Sanofi’s commitment to fighting counterfeit drugs.

MenACWY = N meningitidis serogroups A, C, W, and Y. *Menveo (Meningococcal [Groups A, C, Y, and W-135] Oligosaccharide Diphtheria CRM197 Conjugate Vaccine). Menactra (Meningococcal [Groups A, C, Y, and W-135] Polysaccharide Diphtheria Toxoid Conjugate Vaccine).

MenQuadfi is a registered trademark of Sanofi Inc.

Menactra is a registered trademark of Sanofi, its affiliates, and its subsidiaries.

The other brands listed are trademarks owned by or licensed to their respective owners and are not owned by or licensed to Sanofi, its affiliates and/or its subsidiaries.

REFERENCES:

  1. MenQuadfi [Prescribing Information]. Sanofi Inc.
  2. Sanofi Inc. Data on File. July 27, 2020.
  3. About meningococcal vaccines. Centers for Disease Control and Prevention. Last reviewed November 20, 2023. Accessed June 26, 2025. https://www.cdc.gov/vaccines/​vpd/mening/hcp/about-vaccine.html#print
  4. Vaccine timeline. Immunization Action Coalition. Updated March 18, 2025. Accessed July 24, 2025. https://www.immunize.org/timeline
  5. Menactra [Prescribing Information]. Sanofi Inc.
  6. FDA approves use of Menactra® vaccine for booster immunization against potentially deadly disease. Press release. Sanofi; September 8, 2024. Accessed July 30, 2023. https://www.news.sanofi.us/press-releases?item=137127

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MAT-US-2007152-v11.0-07/2025 Last Updated: 07/2025