This cohort study examines the internal jugular vein flow and morphology of crew members of the International Space Station and the use of lower body negative pressure as a countermeasure to the headward fluid shift experienced during space flight. | Continue reading
This case series reviews comprehensive cardiac imaging in children with myocarditis after COVID-19 vaccine. | Continue reading
This mixed cross-sectional–cohort study evaluates associations among computational model–derived reinforcement learning parameters, depression symptoms, and symptom changes after cognitive behavioral therapy. | Continue reading
This Viewpoint explains how vaccine apathy rather than hesitancy may lead to population undervaccination, and uses marketing principles to explain how public health messaging might differ to persuade apathetic persons to be immunized to achieve more widespread COVID-19 protection … | Continue reading
This cohort study reports the prevalence of long-term symptoms in children and adolescents who had recovered from acute SARS-CoV-2 infection. | Continue reading
This cross-sectional study examines national trends in representativeness in select health care occupations by race/ethnicity and sex. | Continue reading
This cohort study examines the duration and variation of recovery among COVID-19–positive verses COVID-19–negative individuals. | Continue reading
This case series describes myocarditis presenting after COVID-19 vaccination within the Military Health System. | Continue reading
This randomized clinical trial measured inhaled and exhaled carbon dioxide in children with and without face masks. | Continue reading
To address vaccine hesitancy based on concerns about fertility, this study assesses sperm parameters before and after mRNA vaccine administration. | Continue reading
This randomized trial compares the effects of ivermectin vs placebo on time to symptom resolution within 21 days among patients with mild COVID-19. | Continue reading
This cross-sectional study examines the spread of misinformation regarding the Danish Study to Assess Face Masks for the Protection Against COVID-19 Infection on Facebook. | Continue reading
This systematic review uses data from cohort studies to examine the frequency, variety, and severity of persistent symptoms among individuals with previous COVID-19 infection. | Continue reading
Objective To determine whether hearing loss is associated with incident all-cause dementia and Alzheimer disease (AD).Design Prospective study of 639 individuals who underwent audiometric testing and were dementia free in 1990 to 1994. Hearing loss was defined by a pure-t … | Continue reading
This cohort study examines whether low levels of vitamin D are associated with SARS-CoV-2 seropositivity, an indicator of previous infection. | Continue reading
This cross-sectional study evaluates the compliance of hospitals with a Centers for Medicare & Medicaid Services ruling mandating that hospital chargemasters be publicly available in a machine-readable file. | Continue reading
This study evaluates associations between gender-affirming surgeries and mental health outcomes, including psychological distress, substance use, and suicide risk. | Continue reading
This cohort study evaluates the suitability of including pathogenic copy number variants associated with neuropsychiatric disorders in population screening by determining their prevalence and penetrance and exploring the personal utility of disclosing results. | Continue reading
This quality improvement study compares the fitted filtration efficiency of commonly available face masks worn singly, doubled, or in combinations. | Continue reading
This survey study of physicians, nurse practitioners, and physician assistants explores practitioner understanding of diagnostic reasoning. | Continue reading
This survey study examines adolescent firearm access in homes with guns, how storage may modify access, and discordance between parent and adolescent report of access. | Continue reading
This Viewpoint explains the “green pass” program in Israel to encourage residents to seek COVID-19 vaccination, with incentives including access to social, cultural, and sports events and gyms, hotels, and restaurants as well as exemption from quarantine after travel or exposure … | Continue reading
This study examines the neutralizing antibody response to 4 SARS-CoV-2 variants in infected and vaccinated individuals. | Continue reading
This randomized trial compares the effects of a single 200 000-IU dose of vitamin D3 vs placebo on length of stay in patients hospitalized with moderate to severe COVID-19. | Continue reading
This 5-decade cohort study of a New Zealand population examines whether slow gait speed in middle age is associated with accelerated biological aging, as well as poor neurocognitive functioning in childhood and cognitive decline from childhood to middle age. | Continue reading
This cross-sectional study compiles data from multiple North American professional sports teams to assess the prevalence of detectable inflammatory heart disease in professional athletes with prior coronavirus disease 2019 infection. | Continue reading
This cohort study evaluates evidence of SARS-CoV-2 infection based on diagnostic nucleic acid amplification test among patients who tested positive versus negative for antibodies. | Continue reading
The experiments here described were performed on an island in Boston Harbor, on volunteers obtained from the Navy. The work was conducted by a group of officers detailed for that purpose, from the U. S. Navy and the U. S. Public Health Service, consisting of Dr. G. W. McCoy, dire … | Continue reading
This decision analytical model assesses the proportion of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) transmissions in the community that likely occur from persons without symptoms. | Continue reading
This cohort study characterizes emergent trends in overdose-related cardiac arrests in the US during the coronavirus disease 2019 (COVID-19) pandemic using a large, national emergency medical services database. | Continue reading
This Medical News article discusses the leading vaccine candidates against the novel coronavirus. | Continue reading
This issue of JAMA contains yet another study, and certainly among the best published to date, demonstrating the lack of efficacy of hydroxychloroquine as a treatment of coronavirus disease 2019 (COVID-19).1 This study, from the National Heart, Lung, and Blood Institute PETAL Cli … | Continue reading
This randomized clinical trial examines the efficacy of psilocybin as an adjunct to psychotherapy and other treatments for major depressive disorder. | Continue reading
This JAMA Insights Clinical Update discusses herd immunity in the context of the COVID-19 pandemic and explains the herd immunity threshold as a function of transmissibility (R0), the role of an effective vaccine and vaccination program in sustaining herd immunity, and the risks … | Continue reading
This study updates a previous report of the estimated number of excess deaths in the US during the coronavirus disease 2019 (COVID-19) pandemic through August 1, 2020, and describes causes of those deaths and temporal relationships with state lifting of coronavirus restrictions. | Continue reading
This Viewpoint compares the COVID-19 per capita overall and excess mortality rates in the US vs that of 18 OECD countries and the timing of any increases in excess mortality between February and September 2020. | Continue reading
In this Viewpoint, 2 Harvard economists estimate the cumulative financial costs of the COVID-19 pandemic in the US to date from lost domestic output and health reduction at more than $16 trillion, as a way to put the lesser costs of public health measures, such as population test … | Continue reading
This randomized clinical trial examines the effect of 16:8-hour time-restricted eating on weight loss and metabolic risk markers. | Continue reading
This pooled cohort study investigates the association between sleep duration and cognitive decline in a combined analysis of 2 nationally representative aging cohorts. | Continue reading
This Viewpoint discusses the long-term symptoms and sequelae of COVID-19 infection, including physical manifestations and mental health consequences, and calls for observational studies and clinical trials to better understand the disease after the acute phase. | Continue reading
This randomized clinical trial evaluates the efficacy of hydroxychloroquine to prevent transmission of SARS-CoV-2 in health care workers with exposure to patients with COVID-19 at 2 hospitals in Philadelphia, Pennsylvania. | Continue reading
This case report describes a woman in her 40s who presented with unilateral rhinorrhea, metallic taste, headache, neck stiffness, and photophobia after completing nasal swab testing for severe acute respiratory syndrome coronavirus 2. | Continue reading
This randomized clinical trial examines the effect of 16:8-hour time-restricted eating on weight loss and metabolic risk markers. | Continue reading
This randomized clinical trial examines the effect of 16:8-hour time-restricted eating on weight loss and metabolic risk markers. | Continue reading
This randomized clinical trial examines the effect of 16:8-hour time-restricted eating on weight loss and metabolic risk markers. | Continue reading
This Medical News article discusses the puzzling phenomenon of “long-haulers,” patients who haven’t returned to full health weeks or even months after what sometimes is a mild case of COVID-19. | Continue reading
This cohort study assesses the association between daily wear of eyeglasses and susceptibility to coronavirus disease 2019 among patients admitted to a single hospital with infection. | Continue reading
Background Patients facing difficult decisions often ask physicians for recommendations. However, little is known regarding the ways that physicians' decisions are influenced by the act of making a recommendation.Methods We surveyed 2 representative samples of US primary … | Continue reading