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J Korean Med Sci ; 37(30): e233, 2022 Aug 01.
Article in English | MEDLINE | ID: covidwho-1974634


The World Health Organization declared coronavirus disease 2019 (COVID-19) a global pandemic in March 2020. Several vaccines have been developed to overcome the COVID-19 pandemic, and messenger RNA vaccines, commonly known as mRNA vaccines, were the first COVID-19 vaccines to be authorized in Korea. With the worldwide increase in vaccinations, reports of adverse reactions are increasing. However, to the best of our knowledge, there have been no reports of eosinophilic gastroenteritis (EGE) following mRNA vaccination. Here, we present the first case of EGE in a patient who received a second dose of the mRNA vaccine, BNT162b2 (Pfizer-BioNTech). A previously healthy 34-year-old woman presented to the emergency department with generalized abdominal pain for the preceding 2 weeks. She had received a second dose of the mRNA COVID-19 vaccine 2 weeks prior. Subserosal EGE was diagnosed, oral prednisolone was administered, and she recovered completely.

BNT162 Vaccine , COVID-19 , Enteritis , Eosinophilia , Gastritis , Adult , BNT162 Vaccine/adverse effects , Enteritis/chemically induced , Eosinophilia/chemically induced , Female , Gastritis/chemically induced , Humans , Vaccination/adverse effects
J Allergy Clin Immunol Pract ; 10(3): 742-750.e14, 2022 03.
Article in English | MEDLINE | ID: covidwho-1729872


BACKGROUND: In addition to their proinflammatory effect, eosinophils have antiviral properties. Similarly, inhaled corticosteroids (ICS) were found to suppress coronavirus replication in vitro and were associated with improved outcomes in coronavirus disease 2019 (COVID-19). However, the interplay between the two and its effect on COVID-19 needs further evaluation. OBJECTIVE: To determine the associations among preexisting blood absolute eosinophil counts, ICS, and COVID-19-related outcomes. METHODS: We analyzed data from the Cleveland Clinic COVID-19 Research Registry (April 1, 2020 to March 31, 2021). Of the 82,096 individuals who tested positive, 46,397 had blood differential cell counts obtained before severe acute respiratory syndrome coronavirus 2 testing dates. Our end points included the need for hospitalization, admission to the intensive care unit (ICU), and in-hospital mortality. The effect of eosinophilia on outcomes was estimated after propensity weighting and adjustment. RESULTS: Of the 46,397 patients included in the final analyses, 19,506 had preexisting eosinophilia (>0.15 × 103 cells/µL), 5,011 received ICS, 9,096 (19.6%) were hospitalized, 2,129 required ICU admission (4.6%) and 1,402 died during index hospitalization (3.0%). Adjusted analysis associated eosinophilia with lower odds for hospitalization (odds ratio [OR] [95% confidence interval (CI)]: 0.86 [0.79-0.93]), ICU admission (OR [95% CI]: 0.79 [0.69-0.90]), and mortality (OR [95% CI]: 0.80 [0.68-0.95]) among ICS-treated patients but not untreated ones. The correlation between absolute eosinophil count and the estimated probability of hospitalization, ICU admission, and death was nonlinear (U-shaped) among patients not treated with ICS, and negative in treated patients. CONCLUSIONS: The association between eosinophilia and improved COVID-19 outcomes depends on ICS. Future randomized controlled trials are needed to determine the role of ICS and its interaction with eosinophilia in COVID-19 therapy.

COVID-19 , Eosinophilia , Pulmonary Disease, Chronic Obstructive , Adrenal Cortex Hormones , COVID-19 Testing , Eosinophilia/chemically induced , Eosinophilia/drug therapy , Eosinophilia/epidemiology , Humans , Pulmonary Disease, Chronic Obstructive/complications , SARS-CoV-2