ABSTRACT
Introduction: Acute myocarditis after coronavirus disease 2019 (COVID-19) mRNA vaccination is not well described. Recent public reports have signaled that this is an entity that requires ongoing surveillance. The goal of this study is to investigate myocarditis incidence following COVID-19 mRNA vaccination, and to report the clinical course and outcomes. Methods: This is a retrospective population-based cohort study performed at Kaiser Permanente Southern California (KPSC), an integrated health care system in California. Patients who received at least one dose of BNT162b2 (Pfizer) or mRNA-1273 (Moderna) mRNA vaccine were included. Clinically significant cases of acute myocarditis within 10 days of COVID-19 mRNA vaccination were identified between 12/14/2020 and 5/31/2021. Key demographic, clinical, laboratory, diagnostic data, and clinical course were obtained from medical record review. Results: Of 1,776,608 KPSC members who received at least one dose of COVID-19 mRNA vaccines, 12 developed acute myocarditis within 10 days following vaccination, for an estimated incidence of 6.6 cases per 1 million patients. All patients were relatively healthy White or Hispanic men between the ages of 18 and 40 years. Patients reported chest pain two to eight days after vaccine administration (Moderna N=5;Pfizer N=7). Eleven patients developed myocarditis after the second dose, and one after the first dose. Troponin I elevations ranged from 1.53-32.30 ng/mL. All cases were self-limited, with troponin peaking within 24-48 hours of admission and symptom resolution prior to discharge. None of the patients had evidence of decompensated heart failure. Length of stay was 1-4 days, with all patients discharged home and no recurrence, readmission, or major adverse cardiac events. Conclusions: Acute myocarditis after COVID-19 mRNA vaccination is a rare and self-limited event that warrants further description and investigation.
ABSTRACT
COVID-19 vaccination is critical to ending the COVID-19 pandemic. Members of minority racial and ethnic groups have experienced disproportionate COVID-19–associated morbidity and mortality (1);however, COVID-19 vaccination coverage is lower in these groups (2). CDC used data from CDC’s Vaccine Safety Datalink (VSD)* to assess disparities in vaccination coverage among persons aged ≥16 years by race and ethnicity during December 14, 2020–May 15, 2021. Measures of coverage included receipt of ≥1 COVID-19 vaccine dose (i.e., receipt of the first dose of the Pfizer-BioNTech or Moderna COVID-19 vaccines or 1 dose of the Janssen COVID-19 vaccine [Johnson And Johnson]) and full vaccination (receipt of 2 doses of the Pfizer-BioNTech or Moderna COVID-19 vaccines or 1 dose of Janssen COVID-19 vaccine). Among 9.6 million persons aged ≥16 years enrolled in VSD during December 14, 2020–May 15, 2021, ≥1-dose coverage was 48.3%, and 38.3% were fully vaccinated. As of May 15, 2021, coverage with ≥1 dose was lower among non-Hispanic Black (Black) and Hispanic persons (40.7% and 41.1%, respectively) than it was among non-Hispanic White (White) persons (54.6%). Coverage was highest among non-Hispanic Asian (Asian) persons (57.4%). Coverage with ≥1 dose was higher among persons with certain medical conditions that place them at higher risk for severe COVID-19 (high-risk conditions) (63.8%) than it was among persons without such conditions (41.5%) and was higher among persons who had not had COVID-19 (48.8%) than it was among those who had (42.4%). Persons aged 18–24 years had the lowest ≥1-dose coverage (28.7%) among all age groups. Continued monitoring of vaccination coverage and efforts to improve equity in coverage are critical, especially among populations disproportionately affected by COVID-19. VSD is a collaboration between CDC’s Immunization Safety Office and eight integrated health care organizations in six U.S. states.† VSD captures information on COVID-19 vaccine doses administered, regardless of where they are received, based on an automated search within the organizations’ facilities (outpatient and inpatient records) and external systems (e.g., health insurance claims and state or local immunization What is already known about this topic? Non-Hispanic Black and Hispanic persons experience higher COVID-19–associated morbidity and mortality, yet COVID-19 vaccination coverage is lower in these groups. What is added by this report? As of May 15, 2021, 48.3% of persons identified in CDC’s Vaccine Safety Datalink aged ≥16 years had received ≥1 COVID-19 vaccine dose and 38.3% were fully vaccinated. Coverage with ≥1 dose was lower among non-Hispanic Black (40.7%) and Hispanic persons (41.1%) than among non-Hispanic White persons (54.6%);coverage was highest (57.4%) among non-Hispanic Asian persons. What are the implications for public health practice? Continued monitoring of vaccination coverage and efforts to improve equity in vaccination coverage are critical, especially among populations disproportionately affected by COVID-19. © 2021 Department of Health and Human Services. All rights reserved.
ABSTRACT
In December 2019, a cluster of atypical pneumonia cases were reported in Wuhan, China, and a novel coronavirus elucidated as the aetiologic agent. Although most initial cases occurred in China, the disease, termed coronavirus disease 2019, has become a pandemic and continues to spread rapidly with human-to-human transmission in many countries. This is the third novel coronavirus outbreak in the last two decades and presents an ensuing healthcare resource burden that threatens to overwhelm available healthcare resources. A study of the initial Chinese response has shown that there is a significant positive association between coronavirus disease 2019 mortality and healthcare resource burden. Based on the Chinese experience, some 19% of coronavirus disease 2019 cases develop severe or critical disease. This results in a need for adequate preparation and mobilisation of critical care resources to anticipate and adapt to a surge in coronavirus disease 2019 case-load in order to mitigate morbidity and mortality. In this article, we discuss some of the peri-operative and critical care resource planning considerations and management strategies employed in a tertiary academic medical centre in Singapore in response to the coronavirus disease 2019 outbreak.