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Published on: August 4, 2023
Assessing the Impact of Vaccination Status on Meningitis Risk Post Cochlear Implantation
Jamil Hayden1, Emily R Youner1, Ross Rosen1
1Department of Otolaryngology-Head and Neck Surgery, University Hospitals Cleveland Medical Center/Case Western Reserve School of Medicine, Cleveland, Ohio, USA.
Objective:
To better understand the protective benefit of pneumococcal vaccines on rates of meningitis after cochlear implantation.
Study Design:
Retrospective large database review.
Setting:
Several studies have shown that cochlear implantation increases the incidence of bacterial meningitis, mostly due to pneumococcal meningitis. However, there are no studies that have demonstrated that pneumococcal vaccination is associated with a decreased risk of meningitis among cochlear implant recipients.
Methods:
TriNetX, an electronic medical record database, was queried for incidence of meningitis after cochlear implantation, with and without pneumococcal vaccination.
Results:
There are a total of 35,434 patients in the TriNetX database who have received a cochlear implant. Of these patients, 9803 patients (27.7%) had coding sufficient to assess their immunization status and were included in our study. Of the patients in our study, 9264 patients (93.7%) had evidence of receiving a PCV immunization, while 539 (5.5%) were found to be under vaccinated. A total of 258 patients in our study had an episode of meningitis after cochlear implantation, translating to an overall rate of 2.6%. The vaccinated group demonstrated a significantly lower incidence of meningitis (2.5%, n = 236) compared to the under-vaccinated group (4.1%, n = 22) (relative risk: 1.60; confidence interval (1.0441, 2.4586); P < .0310).
Conclusion:
Our study provides evidence that pneumococcal vaccination is associated with a significantly lower rate of bacterial meningitis after cochlear implantation. Meningitis is a potentially life-threatening complication. Better adherence to pneumococcal vaccination guidelines pre- and post-CI is critical to reducing the feared risk of bacterial meningitis after cochlear implantation.
Insights
Pneumococcal vaccination significantly reduces the risk of bacterial meningitis in cochlear implant recipients. This finding highlights the importance of pneumococcal immunization for individuals undergoing cochlear implantation to prevent serious complications.
Area of Science:
- Otolaryngology
- Infectious Disease Epidemiology
- Vaccinology
Background:
- Cochlear implantation is associated with an increased risk of bacterial meningitis, particularly pneumococcal meningitis.
- Existing research lacks data on the protective effect of pneumococcal vaccination in cochlear implant recipients.
Purpose of the Study:
- To evaluate the association between pneumococcal vaccination and the incidence of meningitis following cochlear implantation.
- To determine if pneumococcal immunization reduces the risk of meningitis in cochlear implant users.
Main Methods:
- Retrospective review of a large electronic medical record database (TriNetX).
- Analysis of meningitis incidence in cochlear implant patients, stratified by pneumococcal vaccination status.
- Inclusion of patients with sufficient coding for immunization status assessment.
Main Results:
- A total of 9803 cochlear implant patients were included in the study.
- 93.7% of patients received pneumococcal vaccination (PCV), while 5.5% were under-vaccinated.
- The vaccinated group had a significantly lower incidence of meningitis (2.5%) compared to the under-vaccinated group (4.1%, P < .0310).
Conclusions:
- Pneumococcal vaccination is demonstrably associated with a reduced rate of bacterial meningitis after cochlear implantation.
- Meningitis is a severe, potentially fatal complication that can be mitigated by vaccination.
- Adherence to pneumococcal vaccination guidelines before and after cochlear implantation is crucial for patient safety.
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