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1.
Psychiatric Annals ; 53(5):221-223, 2023.
Article in English | ProQuest Central | ID: covidwho-2319622

ABSTRACT

The transgender population has higher rates of psychiatric disorders and stigma within medical settings. Literature suggests that gender-affirming care is the standard when working with such patients. There are limited studies regarding treating these patients with severe mental illness (SMI). This article explores how to treat SMI that impacts patients' reality to the point where their assigned sex cannot be acknowledged. The case presented is that of a transgender woman, where clarification of her natal sex was crucial to treatment. The patient denied her natal sex, endorsing a history of miscarriage. Studies on treatment of transgender SMI patients are limited. Gender-affirming treatment is the standard of care for these patients. Training how to ask pertinent questions and communicate effectively is necessary to prevent misdiagnosis, unnecessary treatment, and agitation. [Psychiatr Ann. 2023;53(5):221–223.]

2.
Osteoarthritis and Cartilage ; 31(5):709-710, 2023.
Article in English | EMBASE | ID: covidwho-2315222

ABSTRACT

Purpose: Rehabilitation to address modifiable factors associated with chronic hip-related groin pain (CHRGP) may lead to reduced pain and improved function, yet little is known about its effectiveness. We assessed the preliminary effects of two interventions that target two distinct mechanisms, sensory disturbances and abnormal movement patterns. Sensory disturbances such as peripheral and central sensitization may contribute to pain persistence long after initial injury. Joint mobilization (JtMob) may impart a neurophysiological response within the nervous system that results in pain reduction and improved mobility. Abnormal movement patterns may create altered mechanical stresses on hip joint structures, resulting in pain and activity limitations. Movement pattern training (MoveTrain) may improve movement patterns and thus patient function. Method(s): Patients with CHRGP, 18-40, were enrolled. Assessments included self-report questionnaires, clinical exam, and quantitative sensory testing. Outcomes included the Hip disability and Osteoarthritis Outcome Score (HOOS), a patient-reported outcome;frontal plane kinematics of hip, pelvis, and trunk during single leg squat;and pain pressure threshold (PPT) assessed at the anterior groin of the most bothersome hip and dominant thenar eminence (local and generalized pressure hypersensitivity, respectively). Patients were randomized to JtMob or MoveTrain in a 1:1 ratio stratified by sex and HOOS Symptoms. Treatment for both groups included 10 individualized visits over 12 weeks with a trained physical therapist (PT);assessment of patient goals and education which focused on patient-specific tasks reported by the patient to be symptom-producing;instruction in a home exercise program (HEP);and handouts that provided education, description and benefits of assigned treatment and instructions for HEP. The key element of JtMob was PT-provided manual techniques using specific criteria to determine the joint mobilization techniques and parameters used for each patient. The patient's symptom report to each technique was monitored and if indicated, the technique modified according to our outlined procedures. The HEP included flexibility exercises. The key element of MoveTrain was task-specific instruction to correct abnormal movement patterns displayed during daily and patient-specific tasks. For example, hip adduction was minimized during a step descent. The HEP included repeated practice of modified tasks. Task difficulty was progressed based on each patient's performance. Immediately after treatment completion, patients returned for follow up assessment. To assess treatment sustainability after the active treatment phase, we collected HOOS at 6 and 12 months (extended follow-up), and kinematics and PPT at 12 months. Data from patients who provided any data after baseline were analyzed with a repeated measures analysis of variance (RM-ANOVA) with baseline value as a covariate, patient as a random effect, and an autoregressive covariance structure. After adjusting for baseline, the between-group difference in change from post-treatment to each extended follow-up results from pre-planned statistical contrasts in a RM-ANOVA that includes main effects for treatment group, visit and the group by visit interaction. The within-group treatment effect at each extended follow-up was calculated by subtracting the earlier time point from the later follow-up within each treatment group. Dependent samples t-tests were used to assess the degree of within-group change. Result(s): Demographics and outcome data are provided in Tables 1 and 2, respectively. Thirty-three patients with CHRGP were randomized and 29 (88%) provided post-treatment data. Four patients did not complete treatment or post-treatment testing (3 due to COVID pandemic, 1 lost to follow up);6 patients did not complete 12 month laboratory testing (due to pandemic), but did complete 12 month questionnaires. Previously, we reported that both groups reported clinically important improvements in HOOS subscales and MoveTrain group improved hip and pelvis kinematics immediately after treatment compared to baseline. After adjusting for baseline, there were no between-group differences in change in outcomes between post-treatment and extended follow-up when comparing JtMob and MoveTrain, indicating that treatment effects immediately post-treatment were maintained at 12 months after treatment completion. Conclusion(s): Our preliminary findings suggest that 12 weeks of JtMob or MoveTrain, may result in improvements in patient-reported pain and function and these effects may persist 12 months after treatment completion. A future, larger trial to definitively assess the efficacy of JtMob and MoveTrain and identify factors associated with long-term outcomes will improve our ability to develop treatment strategies for people with CHRGP. [Formula presented] [Formula presented]Copyright © 2023

3.
Ophthalmic Plast Reconstr Surg ; 2022 Sep 09.
Article in English | MEDLINE | ID: covidwho-2262972

ABSTRACT

PURPOSE: In response to the coronavirus (COVID-19) pandemic, teprotumumab production was temporarily halted with resources diverted toward vaccine production. Many patients who initiated treatment with teprotumumab for thyroid eye disease were forced to deviate from the standard protocol. This study investigates the response of teprotumumab when patients receive fewer than the standard 8-dose regimen. METHODS: This observational cross-sectional cohort study included patients from 15 institutions with active or minimal to no clinical activity thyroid eye disease treated with the standard teprotumumab infusion protocol. Patients were included if they had completed at least 1 teprotumumab infusion and had not yet completed all 8 planned infusions. Data were collected before teprotumumab initiation, within 3 weeks of last dose before interruption, and at the visit before teprotumumab reinitiation. The primary outcome measure was reduction in proptosis more than 2 mm. Secondary outcome measures included change in clinical activity score (CAS), extraocular motility restriction, margin reflex distance-1 (MRD1), and reported adverse events. RESULTS: The study included 74 patients. Mean age was 57.8 years, and 77% were female. There were 62 active and 12 minimal to no clinical activity patients. Patients completed an average of 4.2 teprotumumab infusions before interruption. A significant mean reduction in proptosis (-2.9 mm in active and -2.8 mm in minimal to no clinical activity patients, P < 0.01) was noted and maintained during interruption. For active patients, a 3.4-point reduction in CAS (P < 0.01) and reduction in ocular motility restriction (P < 0.01) were maintained during interruption. CONCLUSIONS: Patients partially treated with teprotumumab achieve significant reduction in proptosis, CAS, and extraocular muscle restriction and maintain these improvements through the period of interruption.

4.
PLoS One ; 17(12): e0278479, 2022.
Article in English | MEDLINE | ID: covidwho-2140709

ABSTRACT

Health care workers' (HCWs) lived experiences and perceptions of the pandemic can prove to be a valuable resource in the face of a seemingly persistent Novel coronavirus disease 2019 (COVID-19)-to inform ongoing efforts, as well as identify components essential to a crisis preparedness plan and the issues pertinent to supporting relevant, immediate change. We employed a phenomenological approach and, using purposive sampling, conducted 39 semi-structured interviews with senior healthcare professionals who were employed at a designated COVID-19 facility in New South Wales (NSW), Australia during the height of the pandemic in 2020. Participants comprised administrators, heads of department and senior clinicians. We obtained these HCWs' (i) perspectives of their lived experience on what was done well and what could have been done differently and (ii) recommendations on actions for current and future crisis response. Four themes emerged: minimise the spread of disease at all times; maintain a sense of collegiality and informed decision-making; plan for future crises; and promote corporate and clinical agility. These themes encapsulated respondents' insights that should inform our capacity to meet current needs, direct meaningful and in situ change, and prepare us for future crises. Respondents' observations and recommendations are informative for decision-makers tasked with mobilising an efficacious approach to the next health crisis and, in the interim, would aid the governance of a more robust workforce to effect high quality patient care in a safe environment.


Subject(s)
COVID-19 , Humans , COVID-19/epidemiology , COVID-19/prevention & control , Australia , Health Facilities , Pandemics/prevention & control , Delivery of Health Care
5.
Orbit ; 41(6): 670-679, 2022 Dec.
Article in English | MEDLINE | ID: covidwho-1937524

ABSTRACT

PURPOSE: To present a literature review on various immunopathologic dysfunctions following COVID-19 infection and their potential implications in development of rhino-orbital-cerebral mucormycosis (ROCM). METHODS: A literature search was performed via Google Scholar and PubMed with subsequent review of the accompanying references. Analogies were drawn between the immune and physiologic deviations caused by COVID-19 and the tendency of the same to predispose to ROCM. RESULTS: Sixty-two articles were reviewed. SARS-CoV-2 virus infection leads to disruption of epithelial integrity in the respiratory passages, which may be a potential entry point for the ubiquitous Mucorales to become invasive. COVID-19 related GRP78 protein upregulation may aid in spore germination and hyphal invasion by Mucorales. COVID-19 causes interference in macrophage functioning by direct infection, a tendency for hyperglycemia, and creation of neutrophil extracellular traps. This affects innate immunity against Mucorales. Thrombocytopenia and reduction in the number of natural killer (NK) cells and infected dendritic cells is seen in COVID-19. This reduces the host immune response to pathogenic invasion by Mucorales. Cytokines released in COVID-19 cause mitochondrial dysfunction and accumulation of reactive oxygen species, which cause oxidative damage to the leucocytes. Hyperferritinemia also occurs in COVID-19 resulting in suppression of the hematopoietic proliferation of B- and T-lymphocytes. CONCLUSIONS: COVID-19 has a role in the occurrence of ROCM due to its effects at the entry point of the fungus in the respiratory mucosa, effects of the innate immune system, creation of an environment of iron overload, propagation of hyperglycemia, and effects on the adaptive immune system.


Subject(s)
COVID-19 , Eye Diseases , Hyperglycemia , Mucorales , Mucormycosis , Orbital Diseases , Humans , Mucormycosis/microbiology , SARS-CoV-2 , Orbital Diseases/microbiology
6.
Nat Commun ; 13(1): 2774, 2022 05 19.
Article in English | MEDLINE | ID: covidwho-1900484

ABSTRACT

Respiratory tract infection with SARS-CoV-2 results in varying immunopathology underlying COVID-19. We examine cellular, humoral and cytokine responses covering 382 immune components in longitudinal blood and respiratory samples from hospitalized COVID-19 patients. SARS-CoV-2-specific IgM, IgG, IgA are detected in respiratory tract and blood, however, receptor-binding domain (RBD)-specific IgM and IgG seroconversion is enhanced in respiratory specimens. SARS-CoV-2 neutralization activity in respiratory samples correlates with RBD-specific IgM and IgG levels. Cytokines/chemokines vary between respiratory samples and plasma, indicating that inflammation should be assessed in respiratory specimens to understand immunopathology. IFN-α2 and IL-12p70 in endotracheal aspirate and neutralization in sputum negatively correlate with duration of hospital stay. Diverse immune subsets are detected in respiratory samples, dominated by neutrophils. Importantly, dexamethasone treatment does not affect humoral responses in blood of COVID-19 patients. Our study unveils differential immune responses between respiratory samples and blood, and shows how drug therapy affects immune responses during COVID-19.


Subject(s)
COVID-19 , Antibodies, Viral , Humans , Immunity , Immunoglobulin G , Immunoglobulin M , Respiratory System , SARS-CoV-2 , Severity of Illness Index , Spike Glycoprotein, Coronavirus
7.
Acad Emerg Med ; 29(7): 851-861, 2022 07.
Article in English | MEDLINE | ID: covidwho-1868568

ABSTRACT

BACKGROUND: During the COVID-19 pandemic, health care provider well-being was affected by various challenges in the work environment. The purpose of this study was to evaluate the relationship between the perceived work environment and mental well-being of a sample of emergency physicians (EPs), emergency medicine (EM) nurses, and emergency medical services (EMS) providers during the pandemic. METHODS: We surveyed attending EPs, resident EPs, EM nurses, and EMS providers from 10 academic sites across the United States. We used latent class analysis (LCA) to estimate the effect of the perceived work environment on screening positive for depression/anxiety and burnout controlling for respondent characteristics. We tested possible predictors in the multivariate regression models and included the predictors that were significant in the final model. RESULTS: Our final sample included 701 emergency health care workers. Almost 23% of respondents screened positive for depression/anxiety and 39.7% for burnout. Nurses were significantly more likely to screen positive for depression/anxiety (adjusted odds ratio [aOR] 2.04, 95% confidence interval [CI] 1.11-3.86) and burnout (aOR 2.05, 95% CI 1.22-3.49) compared to attendings. The LCA analysis identified four subgroups of our respondents that differed in their responses to the work environment questions. These groups were identified as Work Environment Risk Group 1, an overall good work environment; Risk Group 2, inadequate resources; Risk Group 3, lack of perceived organizational support; and Risk Group 4, an overall poor work environment. Participants in the two groups who perceived their work conditions as most adverse were significantly more likely to screen positive for depression/anxiety (aOR 1.89, 95% CI 1.05-3.42; and aOR 2.04, 95% CI 1.14-3.66) compared to participants working in environments perceived as less adverse. CONCLUSIONS: We found a strong association between a perceived adverse working environment and poor mental health, particularly when organizational support was deemed inadequate. Targeted strategies to promote better perceptions of the workplace are needed.


Subject(s)
Burnout, Professional , COVID-19 , Burnout, Professional/epidemiology , Burnout, Professional/psychology , COVID-19/epidemiology , Depression/diagnosis , Depression/epidemiology , Health Personnel , Humans , Pandemics , Surveys and Questionnaires , United States/epidemiology , Workplace
8.
medrxiv; 2022.
Preprint in English | medRxiv | ID: ppzbmed-10.1101.2022.05.05.22274702

ABSTRACT

The lived experiences of healthcare workers (HCWs) and their perceptions of the pandemic can prove to be a valuable resource in the face of a seemingly persistent Novel coronavirus disease 2019 (COVID-19) to inform ongoing efforts, as well as identify components essential to a crisis preparedness plan and the issues pertinent to supporting relevant change. We employed a phenomenological approach and using purposive sampling conducted 39 semi-structured interviews with senior healthcare professionals who were employed at a designated COVID-19 facility in New South Wales (NSW), Australia during the height of the pandemic in 2020. Participants comprised administrators, heads of department and clinicians. We obtained from these HCWs (i) perspectives of their lived experience on what was done well and what could have been done differently and (ii) recommendations on actions for current and future crisis response. Four themes encapsulated insights of respondents that should inform our capacity to meet current needs, direct meaningful and in situ change, and prepare us for future crises. Observations and recommendations of respondents are informative for decision-makers tasked with mobilising an efficacious approach to the next health crisis and, in the interim, would aid the governance of a more robust workforce to effect high quality patient care in a safe environment.


Subject(s)
COVID-19
9.
Ophthalmic Plast Reconstr Surg ; 38(3): e67-e70, 2022.
Article in English | MEDLINE | ID: covidwho-1758895

ABSTRACT

Three patients presented with periorbital swelling, pain with extraocular movements, and binocular diplopia 1-4 days after receiving an mRNA Coronavirus Infectious Disease-19 (COVID-19) vaccine (BNT162b2, Pfizer/BioNTech; mRNA-1273, Moderna). All patients had a normal afferent function, unilateral limitation of extraocular motility, proptosis, and periorbital inflammation. Neuroimaging of the orbits with contrast revealed inflammation and enlargement of extraocular muscles in 2 cases and the lacrimal gland in 1 case. In all 3 cases, an extensive infectious and inflammatory laboratory work-up was unremarkable and signs and symptoms of orbital inflammation rapidly improved to complete resolution after treatment with high-dose oral prednisone. This is the first reported series of orbital inflammation occurring shortly after administration of the COVID-19 vaccine. Clinicians may consider an inflammatory postvaccine etiology as an alternative to presumed idiopathic diagnosis in such cases.


Subject(s)
COVID-19 , Communicable Diseases , BNT162 Vaccine , COVID-19 Vaccines/adverse effects , Humans , Inflammation , Vaccination
10.
Prof Case Manag ; 27(2): 45-46, 2022.
Article in English | MEDLINE | ID: covidwho-1702238

ABSTRACT

There is a growing trend to care for patients in their home: Families and patients want it, full hospitals demand it, and insurance companies will benefit from it. However, despite all the "positives," there are real threats and dangers to this growth. A lot depends on upcoming choices health care workers make in the coming years.


Subject(s)
Delivery of Health Care , Health Facilities , Health Personnel , Humans
11.
Prof Case Manag ; 26(5): 223, 2021.
Article in English | MEDLINE | ID: covidwho-1370832

ABSTRACT

Case managers are a ubiquitous group of professionals whom others rely upon when times are difficult. October 10-16, 2021, is National Case Management Week. Although 2020 tested us to the core, we can celebrate our week with pride and satisfaction.


Subject(s)
Case Managers , Case Management , Humans
12.
Prof Case Manag ; 26(4): 175-176, 2021.
Article in English | MEDLINE | ID: covidwho-1238283

ABSTRACT

Although accurate secondary statistics may never be known, the COVID-19 pandemic has certainly been a major contributor to several health care issues: social isolation/loneliness, behavioral sequelae (anxiety, drug overdoses, and suicide), delays in treating preventive care that lead to late-stage diagnoses, and even a resurgence of drug-resistant infections.


Subject(s)
Anxiety/psychology , COVID-19/psychology , Drug Overdose/psychology , Loneliness/psychology , Mental Health/statistics & numerical data , Pandemics/statistics & numerical data , Social Isolation/psychology , Suicide/psychology , Adult , Aged , Aged, 80 and over , Anxiety/epidemiology , COVID-19/epidemiology , Drug Overdose/epidemiology , Female , Humans , Male , Middle Aged , SARS-CoV-2 , United States/epidemiology
13.
Nat Commun ; 12(1): 2037, 2021 04 01.
Article in English | MEDLINE | ID: covidwho-1164849

ABSTRACT

The hallmarks of COVID-19 are higher pathogenicity and mortality in the elderly compared to children. Examining baseline SARS-CoV-2 cross-reactive immunological responses, induced by circulating human coronaviruses (hCoVs), is needed to understand such divergent clinical outcomes. Here we show analysis of coronavirus antibody responses of pre-pandemic healthy children (n = 89), adults (n = 98), elderly (n = 57), and COVID-19 patients (n = 50) by systems serology. Moderate levels of cross-reactive, but non-neutralizing, SARS-CoV-2 antibodies are detected in pre-pandemic healthy individuals. SARS-CoV-2 antigen-specific Fcγ receptor binding accurately distinguishes COVID-19 patients from healthy individuals, suggesting that SARS-CoV-2 infection induces qualitative changes to antibody Fc, enhancing Fcγ receptor engagement. Higher cross-reactive SARS-CoV-2 IgA and IgG are observed in healthy elderly, while healthy children display elevated SARS-CoV-2 IgM, suggesting that children have fewer hCoV exposures, resulting in less-experienced but more polyreactive humoral immunity. Age-dependent analysis of COVID-19 patients, confirms elevated class-switched antibodies in elderly, while children have stronger Fc responses which we demonstrate are functionally different. These insights will inform COVID-19 vaccination strategies, improved serological diagnostics and therapeutics.


Subject(s)
Antibodies, Viral/blood , Antibodies, Viral/immunology , Antibody Formation/immunology , SARS-CoV-2/immunology , Adolescent , Adult , Aged , Aged, 80 and over , COVID-19/immunology , COVID-19 Vaccines/immunology , Child , Child, Preschool , Cross Reactions/immunology , Humans , Immunoglobulin A/blood , Immunoglobulin A/immunology , Immunoglobulin G/blood , Immunoglobulin G/immunology , Immunoglobulin M/blood , Immunoglobulin M/immunology , Middle Aged , Receptors, IgG/immunology , Spike Glycoprotein, Coronavirus/immunology , Young Adult
14.
Prof Case Manag ; 26(2): 51-52, 2021.
Article in English | MEDLINE | ID: covidwho-1091178

ABSTRACT

The year 2020 was a time of uncertainties and unpredictability. In this issue of Professional Case Management Journal, 2 articles discuss the issues of prolonged grief, complicated grief, and self-care.


Subject(s)
Attitude of Health Personnel , COVID-19/mortality , COVID-19/psychology , Case Management/organization & administration , Case Managers/psychology , Grief , Self Care/psychology , Adult , Female , Humans , Male , Middle Aged , Surveys and Questionnaires
15.
Prof Case Manag ; 26(1): 1-3, 2021.
Article in English | MEDLINE | ID: covidwho-936519

ABSTRACT

This Editorial is the second of COVID-19 Time Capsule. The first was dated on March 15, 2020. Time Capsule 2 is for July 23, 2020, but will publish in January/February 2021. Consider them "historical" documents-snapshots in time.


Subject(s)
COVID-19/epidemiology , Pandemics , COVID-19/virology , Humans , SARS-CoV-2/isolation & purification , Time Factors
16.
Nat Commun ; 11(1): 5703, 2020 11 11.
Article in English | MEDLINE | ID: covidwho-920614

ABSTRACT

Compared to adults, children with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) have predominantly mild or asymptomatic infections, but the underlying immunological differences remain unclear. Here, we describe clinical features, virology, longitudinal cellular, and cytokine immune profile, SARS-CoV-2-specific serology and salivary antibody responses in a family of two parents with PCR-confirmed symptomatic SARS-CoV-2 infection and their three children, who tested repeatedly SARS-CoV-2 PCR negative. Cellular immune profiles and cytokine responses of all children are similar to their parents at all timepoints. All family members have salivary anti-SARS-CoV-2 antibodies detected, predominantly IgA, that coincide with symptom resolution in 3 of 4 symptomatic members. Plasma from both parents and one child have IgG antibody against the S1 protein and virus-neutralizing activity detected. Using a systems serology approach, we demonstrate higher levels of SARS-CoV-2-specific antibody features of these family members compared to healthy controls. These data indicate that children can mount an immune response to SARS-CoV-2 without virological confirmation of infection, raising the possibility that immunity in children can prevent the establishment of SARS-CoV-2 infection. Relying on routine virological and serological testing may not identify exposed children, with implications for epidemiological and clinical studies across the life-span.


Subject(s)
Antibodies, Viral/blood , Betacoronavirus/immunology , Coronavirus Infections/transmission , Cytokines/blood , Pneumonia, Viral/transmission , Saliva/immunology , Adult , Antibodies, Viral/immunology , Australia , CD4-Positive T-Lymphocytes/immunology , CD8-Positive T-Lymphocytes/immunology , COVID-19 , Child , Child, Preschool , Coronavirus Infections/immunology , Enzyme-Linked Immunosorbent Assay , Female , Humans , Immunoglobulin A/blood , Immunoglobulin A/immunology , Immunoglobulin G/blood , Immunoglobulin G/immunology , Male , Middle Aged , Monocytes/immunology , Pandemics , Parents , Pneumonia, Viral/immunology , SARS-CoV-2 , Serologic Tests , Spike Glycoprotein, Coronavirus/immunology
18.
Prof Case Manag ; 25(5): 245-247, 2020.
Article in English | MEDLINE | ID: covidwho-683258

ABSTRACT

This Editorial will be the first of COVID-19 Time Capsule. This one is dated on March 15, 2020, but will not publish until the September-October 2020 issue. Time Capsule 2 will come out in about 2 months. Consider them "historical" documents-snapshots in time.


Subject(s)
Betacoronavirus/isolation & purification , Coronavirus Infections/epidemiology , Pneumonia, Viral/epidemiology , COVID-19 , Coronavirus Infections/virology , Humans , Pandemics , Pneumonia, Viral/virology , SARS-CoV-2 , United States/epidemiology
19.
Clin Transl Sci ; 13(4): 646-648, 2020 07.
Article in English | MEDLINE | ID: covidwho-343680

ABSTRACT

The global response to finding therapeutics for coronavirus disease 2019 (COVID-19) is chaotic even if well intentioned. There is an opportunity, but more importantly, an obligation for the global clinical and quantitative pharmacology community to come together and use our state-of-the-art tools and expertise to help society accelerate therapeutics to fight COVID-19. This brief commentary is a call to action and highlights how the global pharmacology community should contribute to the COVID-19 pandemic and prepare for future pandemics.


Subject(s)
Antiviral Agents/therapeutic use , Betacoronavirus/drug effects , Coronavirus Infections/drug therapy , Drug Approval/organization & administration , Drug Development/organization & administration , Drug Discovery/organization & administration , Pharmacology, Clinical/organization & administration , Pneumonia, Viral/drug therapy , Antiviral Agents/adverse effects , Antiviral Agents/pharmacokinetics , Betacoronavirus/pathogenicity , COVID-19 , Coronavirus Infections/diagnosis , Coronavirus Infections/virology , Dose-Response Relationship, Drug , Drug Dosage Calculations , Humans , Pandemics , Patient Safety , Pneumonia, Viral/diagnosis , Pneumonia, Viral/virology , SARS-CoV-2 , Time Factors , Workflow
20.
medrxiv; 2020.
Preprint in English | medRxiv | ID: ppzbmed-10.1101.2020.05.11.20098459

ABSTRACT

SARS-CoV-2, the pandemic coronavirus that causes COVID-19, has infected millions worldwide, causing unparalleled social and economic disruptions. COVID-19 results in higher pathogenicity and mortality in the elderly compared to children. Examining baseline SARS-CoV-2 cross-reactive coronavirus immunological responses, induced by circulating human coronaviruses, is critical to understand such divergent clinical outcomes. The cross-reactivity of coronavirus antibody responses of healthy children (n=89), adults (n=98), elderly (n=57), and COVID-19 patients (n=19) were analysed by systems serology. While moderate levels of cross-reactive SARS-CoV-2 IgG, IgM, and IgA were detected in healthy individuals, we identified serological signatures associated with SARS-CoV-2 antigen-specific Fc{gamma} receptor binding, which accurately distinguished COVID-19 patients from healthy individuals and suggested that SARS-CoV-2 induces qualitative changes to antibody Fc upon infection, enhancing Fc{gamma} receptor engagement. Vastly different serological signatures were observed between healthy children and elderly, with markedly higher cross-reactive SARS-CoV-2 IgA and IgG observed in elderly, whereas children displayed elevated SARS-CoV-2 IgM, including receptor binding domain-specific IgM with higher avidity. These results suggest that less-experienced humoral immunity associated with higher IgM, as observed in children, may have the potential to induce more potent antibodies upon SARS-CoV-2 infection. These key insights will inform COVID-19 vaccination strategies, improved serological diagnostics and therapeutics.


Subject(s)
COVID-19
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