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Outcomes


Inadequate Measles, Mumps, Rubella, and Varicella Immunity Among Employees

April 3, 2021  |  Journal of Primary Care & Community Health

Authors

Stephen Ezeji-Okoye, MD, Brittney L. Bilodeau, BSN, RN, Divya K. Madhusudhan, MPH, Eileen Pruett, MPH, Sujith Thokala, MBS, Dena M. Bravata, MD, M

Study Objective

The purpose of this cohort study was to evaluate measles, mumps, rubella (MMR), and varicella immunity among a population of adult employees receiving primary care in an employer-sponsored health center.

Methodology

Participants were eligible for MMR and varicella immunity screening if they were an employee receiving primary care in an employer-sponsored health center between January 1, 2019 and November 1, 2020 who could not provide proof of immunization and 1) had it recommended by their provider, 2) specifically requested immunity testing (often because they had heard of measles outbreaks in their country of origin), or 3) were seen for an immigration physical for their Green Card application.

Study Results

Overall, 3494 patients were screened for their MMR immunity. Of these, 3057 were also screened for varicella immunity. Among these patients, 13.9% lacked measles immunity, 0.83% lacked immunity to all 3 components of MMR, and 13.2% lacked varicella immunity. Among the 262 patients who presented specifically for immunity screening, the rates of lacking immunity were higher for all conditions: 22.7% lacked measles immunity and 9.2% lacked varicella immunity.

 

Population/Clinical SettingLacking Measles ImmunityLacking Varicella Immunity
Overall population screened in employer-sponsored clinics13.9%13.2%
Self-selected into an immunity check22.7%9.2%

 

Conclusion

Given declines in immunizations during the COVID-19 pandemic, there is reason to be concerned that measles and varicella-associated morbidity and mortality may rise. Employers, especially those with large foreign-born populations or who require international travel may want to educate their populations about common contagious illnesses and offer immunity validation or vaccinations at no or low cost.

Complete study in Journal of Primary Care & Community Health