The respiratory syndrome coronavirus (SARS-CoV-2) has undergone genetic evolution and led to variants of concern that vary in transmissibility and clinical severity.

This retrospective cohort analysis studied 232,364 hospitalized COVID-19-positive patients in the National COVID Cohort Collaborative [April 27, 2020 and June 25, 2022]. The primary outcomes were to compare demographics and need for mechanical ventilation and 30-day mortality across variants including Alpha (B.1.1.7), Delta (B.1.617.2), and Omicron (B.1.1.529).

The severity of SARS-CoV-2 decreased in the omicron-subsequent wave with decreased utilization of mechanical ventilation and decreased 30-day mortality among patients with comorbidities like diabetes mellitus, obesity, and liver disease. Although with each subsequent wave, the sex distribution remained equal and constant, there was an increase in rates of diabetes, liver disease, and respiratory disease amongst patients hospitalized with COVID-19 over the COVID waves despite the decreasing 30-day mortality and mechanical ventilation.

Despite changes in demographics over time, more recent COVID waves were associated with decreasing severity and mortality. These observations will help guide specific and effective resource allocation and patient care.

Persistent discrimination and identity threats contribute to adverse health outcomes in minoritized groups, mediated by both structural racism and physiological stress responses.

This study aims to evaluate the feasibility of recruiting African American volunteers for a pilot study of race-based stress, the acceptability of a mindfulness intervention designed to reduce racism-induced stress, and to evaluate preliminary associations between race-based stress and clinical, psychosocial, and biological measures.

A convenience sample of African Americans aged 18–50 from New York City’s Tri-state area underwent assessments for racial discrimination using the Everyday Discrimination Scale (EDS) and Race-Based Traumatic Stress Symptom Scale. Mental health was evaluated using validated clinical scales measuring depression, anxiety, stress, resilience, mindfulness, resilience, sleep, interpersonal connection, and coping. Biomarkers were assessed through clinical laboratory tests, allostatic load assessment, and blood gene expression analysis.

Twenty participants (12 females, 8 males) completed assessments after consent. Elevated EDS scores were associated with adverse lipid profiles, including higher cholesterol/high-density lipoprotein (HDL) ratios and lower HDL levels, as well as elevated inflammatory markers (NF-kB activity) and reduced antiviral response (interferon response factor). Those with high EDS reported poorer sleep, increased substance use, and lower resilience. Mindfulness was positively associated with coping and resilience but inversely to sleep disturbance. 90% showed interest in a mindfulness intervention targeting racism-induced stress.

This study demonstrated an association between discrimination and adverse health effects among African Americans. These findings lay the groundwork for further research to explore the efficacy of mindfulness and other interventions on populations experiencing discrimination.