Details:

Alternative Title:
Open Forum Infect Dis
Personal Author:
Myers, Tanya ; Weintraub, Eric ; McNeil, Michael ; Sukumaran, Lakshmi ; Duffy, Jonathan ; ... More +
Myers, Tanya ; Weintraub, Eric ; McNeil, Michael ; Sukumaran, Lakshmi ; Duffy, Jonathan ; Baxter, Roger ; Klein, Nicola P ; Daley, Matthew F ; Donahue, James ; Tseng, Hung Fu ; Irving, Stephanie ; Jackson, Michael L ; Omer, Saad Less -
Conference Authors:
IDWeek (2018 October 3-7 : San Franciso, CA)
Description:
Background

The first quadrivalent meningococcal conjugate vaccine (MenACWY-D) was recommended for use in adolescents in 2005. Soon after, case reports of Guillain-Barre syndrome (GBS) following vaccination prompted subsequent studies, with a meta-analysis concluding that the attributable risk of GBS after MenACWY-D is unlikely to exceed 1 case per million vaccinations. We conducted a retrospective cohort study in the Vaccine Safety Datalink to assess the risk of 10 outcomes, including GBS, following MenACWY-D.

Methods

We included adolescents (aged 11–18 years) vaccinated with MenACWY-D during the years 2005–2014. We identified pre-specified outcomes using ICD-9 (International Classification of Disease, version 9) codes. We used automated data only for Bell’s palsy, fever, seizure and syncope, and we confirmed incident cases by medical record review for acute disseminated encephalomyelitis (ADEM), acute transverse myelitis (ATM), anaphylaxis, chronic inflammatory demyelinating polyneuropathy (CIDP), GBS and Henoch-Schönlein purpura (HSP). We used a self-controlled risk interval design to estimate relative risk (RR).

Results

Following 1.4 million doses of MenACWY-D, we detected increased risks for fever in the 1–6 days following vaccination (RR 1.5, 95% confidence interval [CI] 1.3–1.7) and syncope on the day of vaccination (RR 5.8, 95% CI 4.1–8.3), but not for seizures (RR 1.1, 95% CI 0.7–1.9) or Bell’s palsy (RR 1.1, 95% CI 0.8–1.5). We detected no cases in the post-vaccination risk intervals for CIDP, ADEM or ATM. We detected few cases of the other outcomes resulting in relatively unstable RR estimates: anaphylaxis (RR 1.9, 95% CI 0.5–7.1), GBS (RR 2.5, 95% CI 0.6–10.0) and HSP (RR 1.6, 95% CI 0.7–3.3). We estimated that the attributable risk of GBS was 1.5 cases per million vaccinations (upper bound of one-sided 95% CI, 4.9).

Conclusion

In a large retrospective cohort, we detected increased risks for syncope and fever, but not seizures or Bell’s palsy, following vaccination with MenACWY-D. Other outcomes were rare. Our findings, consistent with previous studies, suggest that the increased risk of GBS, if any, is likely small (<5 excess cases of GBS per million vaccinations).

Disclosures

N. P. Klein, Sanofi Pasteur: Investigator, Research grant. Merck: Investigator, Research grant. GSK: Investigator, Research grant. Pfizer: Investigator, Research support. Protein Science: Investigator, Research grant. MedImmune: Investigator, Research grant. Dynavax: Research Contractor, Grant recipient. M. L. Jackson, Novartis: Grant Investigator, Research support.


Subjects:
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Abstracts
Source:
Open Forum Infect Dis. 2018; 5(Suppl 1):S737-S738.
Pubmed Central ID:
PMC6254304
Document Type:
Journal Article
Genre:
Abstracts ; Conference Publications
Abstracts ; Conference Publications Less -
Collection(s):
CDC Public Access
Main Document Checksum:
[+]
urn:sha256:adef48627a7fa9b24cb3f019b37952517d39fc3746abd3b87016793a29ab0ed9
Download URL:
https://stacks.cdc.gov/view/cdc/60921/cdc_60921_DS1.pdf
File Type:

Supporting Files

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