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Acute disseminated encephalomyelitis (ADEM) following recent Oxford/AstraZeneca COVID-19 vaccination

ABSTRACT: This report describes the clinical context and autopsy findings in the first reported fatal case of acute disseminated encephalomyelitis (ADEM), developed after being vaccinated using the Oxford/AstraZeneca COVID-19 vaccine. ADEM is a rare autoimmune disease, causing demyelination in the brain and spinal cord. A wide variety of precipitating factors can trigger ADEM, and it has long been known to be a rare adverse event following some types of vaccinations. Recently, ADEM has also been associated with COVID-19 infection and (very rarely) with COVID-19 vaccination. The reports of the latter however all pertain to living patients. Our case demonstrates that ADEM should be considered in patients developing neurological symptoms post COVID-19 vaccination, although that this adverse reaction is likely to remain extremely rare. Our report further emphasizes the added value of comprehensive post mortem investigation to confirm ante mortem diagnosis and to determine vaccination safety.

Supplementary Information

The online version contains supplementary material available at 10.1007/s12024-021-00440-7.

SUBMITTER: Permezel F

PROVIDER: S-EPMC8567127 | biostudies-literature |

REPOSITORIES: biostudies-literature

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COVID-19-associated familial acute disseminated encephalomyelitis (ADEM): A case report.

Project description:BackgroundSeveral neurological complications are being reported in hospitalized patients with severe COVID-19 infection. This is presumed due to direct spread of infection or due to immunological response. Acute disseminated encephalomyelitis (ADEM) is a rare inflammatory and demyelinating disorder of the central nervous system that is often preceded by infection or vaccination. Very few cases of ADEM have been reported in the literature that are associated with COVID-19 infection.Case reportHere we demonstrate familial cases of ADEM in a hospitalized father and son, who presented to the emergency department with fever and shortness of breath, later diagnosed with COVID-19, and subsequently requiring mechanical ventilation. Both patients developed neurological symptoms with upper motor neuron involvement at approximately day 30 of admission. MRI of the brain demonstrated bilateral multifocal periventricular white matter FLAIR signal hyperintensities consistent with ADEM. The patients were treated with medium dose IV methylprednisolone with variable outcomes. The 49-year-old son developed severe residual neurological deficits with encephalomalacic changes on MRI which required extensive rehabilitation; meanwhile, the 68-year-old father predominantly had pulmonary sequelae including fibrosis and the development of a pneumatocele, but he had a better neurological outcome.ConclusionTo our knowledge, this is the first reported case report of ADEM involving father and son in severe COVID-19 infection. Final neurological outcomes in these patients appeared to be in line with the severity of COVID-19 infection. More research is needed to better understand the management of ADEM in patients with severe COVID-19 infection.

| S-EPMC8407943 | biostudies-literature

Thromboembolism and the Oxford-AstraZeneca COVID-19 vaccine: side-effect or coincidence?

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Acute disseminated encephalomyelitis and COVID-19: A systematic synthesis of worldwide cases.

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Autoimmune hepatitis developing after the ChAdOx1 nCoV-19 (Oxford-AstraZeneca) vaccine.

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Pfizer-BioNTech and Oxford AstraZeneca COVID-19 vaccine effectiveness and immune response amongst individuals in clinical risk groups.

Project description:Background COVID-19 vaccines approved in the UK are highly effective in general population cohorts, however, data on effectiveness amongst individuals with clinical conditions that place them at increased risk of severe disease are limited. Methods We used GP electronic health record data, sentinel virology swabbing and antibody testing within a cohort of 712 general practices across England to estimate vaccine antibody response and vaccine effectiveness against medically attended COVID-19 amongst individuals in clinical risk groups using cohort and test-negative case control designs. Findings There was no reduction in S-antibody positivity in most clinical risk groups, however reduced S-antibody positivity and response was significant in the immunosuppressed group. Reduced vaccine effectiveness against clinical disease was also noted in the immunosuppressed group; after a second dose, effectiveness was moderate (Pfizer: 59.6%, 95%CI 18.0-80.1%; AstraZeneca 60.0%, 95%CI -63.6-90.2%). Interpretation In most clinical risk groups, immune response to primary vaccination was maintained and high levels of vaccine effectiveness were seen. Reduced antibody response and vaccine effectiveness were seen after 1 dose of vaccine amongst a broad immunosuppressed group, and second dose vaccine effectiveness was moderate. These findings support maximising coverage in immunosuppressed individuals and the policy of prioritisation of this group for third doses.

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Myocarditis following COVID-19 vaccination.

Project description:The coronavirus disease 2019 (COVID-19) vaccination frequently leads to minor side-effects, that may be more intense after the second dose, but more serious side effects have been reported. We report a case of a 24-year-old man who presented to the hospital with acute substernal chest pain, 4 days after his second COVID-19 Moderna vaccination. Laboratory studies revealed elevated troponins and negative viral serologies. Cardiac magnetic resonance imaging (cMRI) demonstrated edema and delayed gadolinium enhancement of the left ventricle in a midmyocardial and epicardial distribution. The patient was diagnosed with myocarditis following Moderna vaccination. Our case report raises concern that myocarditis is a rare side effect of COVID-19 vaccine. Despite our report, it appears that there is a significantly higher risk of cardiac involvement from COVID-19 infection compared to COVID-19 vaccination.

| S-EPMC8130498 | biostudies-literature

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Project description:Abstract Messenger RNA vaccines are the main COVID-19 vaccines authorized for use in the United States. Side effects are typically minor and transient. We report a case series of four subjects with an acute myocarditis-like illness following mRNA COVID-19 vaccination who were hospitalized at our hospital in Lubbock, Texas. Three patients were young men who presented with acute chest pain after the second dose of the mRNA-1273 vaccine. Another patient was a 53-year-old white woman who presented with acute left arm pain 3 days after the first dose of the mRNA-1273 vaccine. She was later found to have acute decompensated heart failure, and endomyocardial biopsy revealed eosinophilic injury–mediated myocarditis.

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Cutaneous vasculitis following COVID-19 vaccination.

Project description: Not available

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Myocarditis following COVID-19 mRNA vaccination.

Project description:BackgroundClinical trials of the BNT162b2 vaccine, revealed efficacy and safety. We report six cases of myocarditis, which occurred shortly after BNT162b2 vaccination.MethodsPatients were identified upon presentation to the emergency department with symptoms of chest pain/discomfort. In all study patients, we excluded past and current COVID-19. Routine clinical and laboratory investigations for common etiologies of myocarditis were performed. Laboratory tests also included troponin and C-reactive protein levels. The diagnosis of myocarditis was established after cardiac MRI.FindingsFive patients presented after the second and one after the first dose of the vaccine. All patients were males with a median age of 23 years. Myocarditis was diagnosed in all patients, there was no evidence of COVID-19 infection. Laboratory assays excluded concomitant infection; autoimmune disorder was considered unlikely. All patients responded to the BNT162b2 vaccine. The clinical course was mild in all six patients.InterpretationOur report of myocarditis after BNT162b2 vaccination may be possibly considered as an adverse reaction following immunization. We believe our information should be interpreted with caution and further surveillance is warranted.

| S-EPMC8162819 | biostudies-literature

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