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Davis KM, Knauft K, Lewis L, Petriello M, Petrick L, Luca F, Joseph NT, Fritz H, Cutchin M, Rappaport L, Levy P, Engeland CG, Zilioli S. The heart of Detroit study: a window into urban middle-aged and older African Americans' daily lives to understand psychosocial determinants of cardiovascular disease risk. BMC Psychiatry 2023; 23:766. [PMID: 37853373 PMCID: PMC10585810 DOI: 10.1186/s12888-023-05148-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 08/28/2023] [Indexed: 10/20/2023] Open
Abstract
BACKGROUND Cardiovascular disease disproportionately affects African Americans. Psychosocial factors, including the experience of and emotional reactivity to racism and interpersonal stressors, contribute to the etiology and progression of cardiovascular disease through effects on health behaviors, stress-responsive neuroendocrine axes, and immune processes. The full pathway and complexities of these associations remain underexamined in African Americans. The Heart of Detroit Study aims to identify and model the biopsychosocial pathways that influence cardiovascular disease risk in a sample of urban middle-aged and older African American adults. METHODS The proposed sample will be composed of 500 African American adults between the ages of 55 and 75 from the Detroit urban area. This longitudinal study will consist of two waves of data collection, two years apart. Biomarkers of stress, inflammation, and cardiovascular surrogate endpoints (i.e., heart rate variability and blood pressure) will be collected at each wave. Ecological momentary assessments will characterize momentary and daily experiences of stress, affect, and health behaviors during the first wave. A proposed subsample of 60 individuals will also complete an in-depth qualitative interview to contextualize quantitative results. The central hypothesis of this project is that interpersonal stressors predict poor cardiovascular outcomes, cumulative physiological stress, poor sleep, and inflammation by altering daily affect, daily health behaviors, and daily physiological stress. DISCUSSION This study will provide insight into the biopsychosocial pathways through which experiences of stress and discrimination increase cardiovascular disease risk over micro and macro time scales among urban African American adults. Its discoveries will guide the design of future contextualized, time-sensitive, and culturally tailored behavioral interventions to reduce racial disparities in cardiovascular disease risk.
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Affiliation(s)
- Kristin M Davis
- Department of Psychology, Wayne State University, 5057 Woodward Avenue, Detroit, MI, 48202, USA
| | - Katherine Knauft
- Department of Psychology, Wayne State University, 5057 Woodward Avenue, Detroit, MI, 48202, USA
| | - Lena Lewis
- College of Human Medicine, Michigan State University, East Lansing, MI, 48824, USA
| | - Michael Petriello
- Institute of Environmental Health Sciences, Department of Pharmacology, Wayne State University, Detroit, MI, 48201, USA
| | - Lauren Petrick
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Francesca Luca
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI, 48201, USA
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, MI, 48201, USA
| | - Nataria T Joseph
- Department of Psychology, Pepperdine University, Malibu, CA, 90265, USA
| | - Heather Fritz
- School of Occupational Therapy, Pacific Northwest University of Health Sciences, Yakima, WA, 98901, USA
| | - Malcolm Cutchin
- School of Occupational Therapy, Pacific Northwest University of Health Sciences, Yakima, WA, 98901, USA
| | - Lance Rappaport
- Department of Psychology, University of Windsor, Windsor, ON, N9B 1B4, Canada
| | - Phillip Levy
- Departments of Emergency Medicine and Physiology, Wayne State University, Detroit, MI, 48201, USA
| | - Christopher G Engeland
- Department of Biobehavioral Health, Pennsylvania State University, University Park, PA, 16802, USA
- Ross and Carol Nese College of Nursing, Pennsylvania State University, University Park, PA, 16802, USA
| | - Samuele Zilioli
- Department of Psychology, Wayne State University, 5057 Woodward Avenue, Detroit, MI, 48202, USA.
- Department of Family Medicine and Public Health Sciences, Wayne State University, Detroit, MI, 48201, USA.
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Maroto-García J, Deza S, Fuentes-Bullejos P, Fernández-Tomás P, Martínez-Espartosa D, Marcos-Jubilar M, Varo N, González Á. Analysis of common biomarkers in capillary blood in routine clinical laboratory. Preanalytical and analytical comparison with venous blood. Diagnosis (Berl) 2023; 10:281-297. [PMID: 36877154 DOI: 10.1515/dx-2022-0126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 02/13/2023] [Indexed: 03/07/2023]
Abstract
OBJECTIVES Remote self-collected capillary blood samples have been proposed as alternative to venous blood samples as an aid in telemedicine. The aim of this work is to compare the preanalytical and analytical performance of these two types of samples and to study the stability of common measurands in capillary blood. METHODS Capillary and venous blood samples were collected in parallel from 296 patients in serum tubes to analyze 22 common biochemistry magnitudes after centrifugation and in EDTA tubes to analyze 15 hematologic magnitudes. Quality of the preanalytical process was assessed applying the model of quality indicator. 24 h stability at room temperature was studied by obtaining paired capillary samples. A questionnaire of assessment was conducted. RESULTS Mean hemolysis index was higher in capillary samples compared to venous blood samples (p<0.001). Regression analysis and difference analysis showed no bias for all studied biochemistry parameters and hematologic parameters, except mean corpuscular volume (MCV), between capillary and venous blood samples. Regarding sample stability, percentage deviation was higher than the corresponding minimum analytical performance specification for ferritin, vitamin D, hematocrit, MCV, mean corpuscular hemoglobin concentration, platelets distribution wide, mean platelet volume and basophils. Finger pricking was perceived as less painful (p<0.05) than venipuncture in participants who undergo more than one blood test per year. CONCLUSIONS Capillary blood can be used as an alternative to venous blood for the studied parameters in automated common clinical analyzers. Cautious should be taken if samples are not analyzed within 24 h from the collection.
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Affiliation(s)
| | - Sara Deza
- Biochemistry Department, Clínica Universidad de Navarra, Pamplona, Spain
| | | | | | | | | | - Nerea Varo
- Biochemistry Department, Clínica Universidad de Navarra, Pamplona, Spain
| | - Álvaro González
- Biochemistry Department, Clínica Universidad de Navarra, Pamplona, Spain
- Navarra Institute for Health Research (IdiSNA), Pamplona, Spain
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3
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Stabourlos C, van Bilsen CJA, Brinkhues S, Moonen CPB, Demarest S, Hanssen DAT, van Loo IHM, Savelkoul PHM, Philippsen D, van der Zanden BAM, Dukers-Muijrers NHTM, Hoebe CJPA. COVID-19 pandemic response in the Meuse-Rhine Euroregion: methods, participation and recommendations of a longitudinal cross-border study. Arch Public Health 2023; 81:91. [PMID: 37179369 PMCID: PMC10182536 DOI: 10.1186/s13690-023-01102-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 04/29/2023] [Indexed: 05/15/2023] Open
Abstract
BACKGROUND Comparative data collection in transborder areas can contribute to informed decision making processes when dealing with borderless health threats such as pandemics, and thus help minimize the negative health effects for its citizens. To examine the pandemic response over time and the impact of infectious disease control in a cross-border setting, a prospective longitudinal study was conducted in the border area between Germany, Belgium and the Netherlands. In the spring of 2021, a random sample of 26,925 adult citizens selected from governmental registries was invited to collect a blood sample at home for SARS-CoV-2 antibody testing and to fill in an online questionnaire on attitudes and behaviour towards infection prevention measures, cross-border mobility, social network and support, COVID-19 self-reported infection(s) and symptoms, vaccination, general self-reported health and socio-demographics. In autumn 2021, participants were invited for a follow-up round. An online tool was developed to coordinate fieldwork procedures, real-time monitoring of participation and consultation of antibody test results. Furthermore, a helpdesk in all three languages for participants' support was set up. RESULTS In the first round, 6,006 citizens in the Meuse-Rhine Euroregion participated. 15.3% of the invited citizens on the Belgian side of the border participated. In the Netherlands and Germany this was respectively 27% and 23.7%. In the follow-up round 4,286 (71.4%) citizens participated for the second time. The participation rate was highest in the age group 50-69 years and lowest in > 80 in all sub regions of the Meuse-Rhine Euroregion. More women participated than men. Overall, more blood samples were returned than completed questionnaires. In total, 3,344 citizens in the Meuse-Rhine Euroregion completed all components of participation in both rounds. CONCLUSIONS The collection of comparative data can help better assess the pandemic response and the impact of infectious disease control in a cross-border area. Recommendations for a longitudinal cross-border study include a centralized online environment, mapping out potential challenges related to national regulations in the preparation phase and organizing regional coordination centres to create more familiarity and trust towards the involved organisations.
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Affiliation(s)
- C Stabourlos
- Department of Epidemiology and Public Health, Sciensano, Rue Juliette Wytsmanstraat 14, Brussels, 1050, Belgium.
| | - C J A van Bilsen
- Department of Sexual Health, Infectious Diseases and Environmental Health, Living Lab Public Health, Public Health Service South Limburg, Heerlen, the Netherlands
- Department of Social Medicine, Care and Public Health Research Institute (CAPHRI), Maastricht University, Maastricht, The Netherlands
| | - S Brinkhues
- Public Health Service South Limburg, Department of Knowledge and Innovation, Public Health Service (GGD) South Limburg, Heerlen, the Netherlands
| | - C P B Moonen
- Department of Sexual Health, Infectious Diseases and Environmental Health, Living Lab Public Health, Public Health Service South Limburg, Heerlen, the Netherlands
- Department of Social Medicine, Care and Public Health Research Institute (CAPHRI), Maastricht University, Maastricht, The Netherlands
| | - S Demarest
- Department of Epidemiology and Public Health, Sciensano, Rue Juliette Wytsmanstraat 14, Brussels, 1050, Belgium
| | - D A T Hanssen
- Department of Social Medicine, Care and Public Health Research Institute (CAPHRI), Maastricht University, Maastricht, The Netherlands
- Department of Medical Microbiology, Care and Public Health Research Institute (CAPHRI), Maastricht University Medical Centre, Maastricht, The Netherlands
| | - I H M van Loo
- Department of Medical Microbiology, Care and Public Health Research Institute (CAPHRI), Maastricht University Medical Centre, Maastricht, The Netherlands
| | - P H M Savelkoul
- Department of Medical Microbiology, Care and Public Health Research Institute (CAPHRI), Maastricht University Medical Centre, Maastricht, The Netherlands
| | - D Philippsen
- GesundheitsberichterstattungGesundheitsamt Düren, Düren, Germany
| | | | - N H T M Dukers-Muijrers
- Department of Sexual Health, Infectious Diseases and Environmental Health, Living Lab Public Health, Public Health Service South Limburg, Heerlen, the Netherlands
- Department of Health Promotion, Care and Public Health Research Institute (CAPHRI), Maastricht University, Maastricht, The Netherlands
| | - C J P A Hoebe
- Department of Sexual Health, Infectious Diseases and Environmental Health, Living Lab Public Health, Public Health Service South Limburg, Heerlen, the Netherlands
- Department of Social Medicine, Care and Public Health Research Institute (CAPHRI), Maastricht University, Maastricht, The Netherlands
- Department of Medical Microbiology, Care and Public Health Research Institute (CAPHRI), Maastricht University Medical Centre, Maastricht, The Netherlands
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Hirota M, Tamai M, Yukawa S, Taira N, Matthews MM, Toma T, Seto Y, Yoshida M, Toguchi S, Miyagi M, Mori T, Tomori H, Tamai O, Kina M, Sakihara E, Yamashiro C, Miyagi M, Tamaki K, Wolf M, Collins MK, Kitano H, Ishikawa H. Human immune and gut microbial parameters associated with inter-individual variations in COVID-19 mRNA vaccine-induced immunity. Commun Biol 2023; 6:368. [PMID: 37081096 PMCID: PMC10119155 DOI: 10.1038/s42003-023-04755-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 03/24/2023] [Indexed: 04/22/2023] Open
Abstract
COVID-19 mRNA vaccines induce protective adaptive immunity against SARS-CoV-2 in most individuals, but there is wide variation in levels of vaccine-induced antibody and T-cell responses. However, the mechanisms underlying this inter-individual variation remain unclear. Here, using a systems biology approach based on multi-omics analyses of human blood and stool samples, we identified several factors that are associated with COVID-19 vaccine-induced adaptive immune responses. BNT162b2-induced T cell response is positively associated with late monocyte responses and inversely associated with baseline mRNA expression of activation protein 1 (AP-1) transcription factors. Interestingly, the gut microbial fucose/rhamnose degradation pathway is positively correlated with mRNA expression of AP-1, as well as a gene encoding an enzyme producing prostaglandin E2 (PGE2), which promotes AP-1 expression, and inversely correlated with BNT162b2-induced T-cell responses. These results suggest that baseline AP-1 expression, which is affected by commensal microbial activity, is a negative correlate of BNT162b2-induced T-cell responses.
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Affiliation(s)
- Masato Hirota
- Immune Signal Unit, Okinawa Institute of Science and Technology, Graduate University (OIST), Onna-son, Okinawa, Japan
| | - Miho Tamai
- Immune Signal Unit, Okinawa Institute of Science and Technology, Graduate University (OIST), Onna-son, Okinawa, Japan
| | - Sachie Yukawa
- Immune Signal Unit, Okinawa Institute of Science and Technology, Graduate University (OIST), Onna-son, Okinawa, Japan
- Integrated Open Systems Unit, OIST, Onna-son, Okinawa, Japan
| | - Naoyuki Taira
- Immune Signal Unit, Okinawa Institute of Science and Technology, Graduate University (OIST), Onna-son, Okinawa, Japan
| | | | - Takeshi Toma
- Immune Signal Unit, Okinawa Institute of Science and Technology, Graduate University (OIST), Onna-son, Okinawa, Japan
| | - Yu Seto
- Immune Signal Unit, Okinawa Institute of Science and Technology, Graduate University (OIST), Onna-son, Okinawa, Japan
| | - Makiko Yoshida
- Immune Signal Unit, Okinawa Institute of Science and Technology, Graduate University (OIST), Onna-son, Okinawa, Japan
| | - Sakura Toguchi
- Immune Signal Unit, Okinawa Institute of Science and Technology, Graduate University (OIST), Onna-son, Okinawa, Japan
| | - Mio Miyagi
- Immune Signal Unit, Okinawa Institute of Science and Technology, Graduate University (OIST), Onna-son, Okinawa, Japan
| | - Tomoari Mori
- Research Support Division, Occupational Health and Safety, OIST, Onna-son, Okinawa, Japan
| | | | | | | | - Eishin Sakihara
- Health Care Center of the Naha Medical Association, Naha-city, Okinawa, Japan
| | - Chiaki Yamashiro
- Yamashiro Orthopedic Surgery Ophthalmology Clinic, Naha-city, Okinawa, Japan
| | | | - Kentaro Tamaki
- Naha-Nishi Clinic, Department of Breast Surgery, Naha-city, Okinawa, Japan
| | - Matthias Wolf
- Molecular Cryo-Electron Microscopy Unit, OIST, Onna-son, Okinawa, Japan
| | - Mary K Collins
- Research Support Division, Office of the Provost, OIST, Onna-son, Okinawa, Japan
| | - Hiroaki Kitano
- Integrated Open Systems Unit, OIST, Onna-son, Okinawa, Japan
| | - Hiroki Ishikawa
- Immune Signal Unit, Okinawa Institute of Science and Technology, Graduate University (OIST), Onna-son, Okinawa, Japan.
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5
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Michielin G, Arefi F, Puhach O, Bellon M, Sattonnet-Roche P, L'Huillier AG, Eckerle I, Meyer B, Maerkl SJ. Clinical sensitivity and specificity of a high-throughput microfluidic nano-immunoassay combined with capillary blood microsampling for the identification of anti-SARS-CoV-2 Spike IgG serostatus. PLoS One 2023; 18:e0283149. [PMID: 36952463 PMCID: PMC10035827 DOI: 10.1371/journal.pone.0283149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 03/02/2023] [Indexed: 03/25/2023] Open
Abstract
OBJECTIVES We evaluate the diagnostic performance of dried blood microsampling combined with a high-throughput microfluidic nano-immunoassay (NIA) for the identification of anti-SARS-CoV-2 Spike IgG seropositivity. METHODS We conducted a serological study among 192 individuals with documented prior SARS-CoV-2 infection and 44 SARS-CoV-2 negative individuals. Participants with prior SARS-CoV-2 infection had a long interval of 11 months since their qRT-PCR positive test. Serum was obtained after venipuncture and tested with an automated electrochemiluminescence anti-SARS-CoV-2 S total Ig reference assay, a commercial ELISA anti-S1 IgG assay, and the index test NIA. In addition, 109 participants from the positive cohort and 44 participants from the negative cohort participated in capillary blood collection using three microsampling devices: Mitra, repurposed glucose test strips, and HemaXis. Samples were dried, shipped by regular mail, extracted, and measured with NIA. RESULTS Using serum samples, we achieve a clinical sensitivity of 98·33% and specificity of 97·62% on NIA, affirming the high performance of NIA in participants 11 months post infection. Combining microsampling with NIA, we obtain a clinical sensitivity of 95·05% using Mitra, 61·11% using glucose test strips, 83·16% using HemaXis, and 91·49% for HemaXis after automated extraction, without any drop in specificity. DISCUSSION High sensitivity and specificity was demonstrated when testing micro-volume capillary dried blood samples using NIA, which is expected to facilitate its use in large-scale studies using home-based sampling or samples collected in the field.
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Affiliation(s)
- Grégoire Michielin
- Institute of Bioengineering, School of Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Fatemeh Arefi
- Institute of Bioengineering, School of Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Olha Puhach
- Department of Microbiology and Molecular Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Mathilde Bellon
- Department of Microbiology and Molecular Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Pascale Sattonnet-Roche
- Department of Microbiology and Molecular Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Arnaud G L'Huillier
- Laboratory of Virology, Division of Laboratory Medicine, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
- Pediatric Infectious Diseases Unit, Department of Woman, Child and Adolescent Medicine, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
| | - Isabella Eckerle
- Laboratory of Virology, Division of Laboratory Medicine, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
- Division of Infectious Diseases, Department of Medicine, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
- Center for Emerging Viral Diseases, Geneva University Hospitals & Faculty of Medicine, Université de Genève, Geneva, Switzerland
| | - Benjamin Meyer
- Centre for Vaccinology, Department of Pathology and Immunology, University of Geneva, Geneva, Switzerland
| | - Sebastian J Maerkl
- Institute of Bioengineering, School of Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
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A Novel Dry-Stabilized Whole Blood Microsampling and Protein Extraction Method for Testing of SARS-CoV-2 Antibody Titers. Vaccines (Basel) 2022; 10:vaccines10101760. [DOI: 10.3390/vaccines10101760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 10/07/2022] [Accepted: 10/19/2022] [Indexed: 11/16/2022] Open
Abstract
The COVID-19 pandemic has revealed a crucial need for rapid, straightforward collection and testing of biological samples. Serological antibody assays can analyze patient blood samples to confirm immune response following mRNA vaccine administration or to verify past exposure to the SARS-CoV-2 virus. While blood tests provide vital information for clinical analysis and epidemiology, sample collection is not trivial; this process requires a visit to the doctor’s office, a professionally trained phlebotomist to draw several milliliters of blood, processing to yield plasma or serum, and necessitates appropriate cold chain storage to preserve the specimen. A novel whole blood collection kit (truCOLLECT) allows for a lancet-based, decentralized capillary blood collection of metered low volumes and eliminates the need for refrigerated transport and storage through the process of active desiccation. Anti-SARS-CoV-2 spike (total and neutralizing) and nucleocapsid protein antibody titers in plasma samples obtained via venipuncture were compared to antibodies extracted from desiccated whole blood using Adaptive Focused Acoustics (AFA). Paired plasma versus desiccated blood extracts yields Pearson correlation coefficients of 0.98; 95% CI [0.96, 0.99] for anti-SARS-CoV-2 spike protein antibodies, 0.97; 95% CI [0.95, 0.99] for neutralizing antibodies, and 0.97; 95% CI [0.94, 0.99] for anti-SARS-CoV-2 nucleocapsid protein antibodies. These data suggest that serology testing using desiccated and stabilized whole blood samples can be a convenient and cost-effective alternative to phlebotomy.
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7
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Martin MA, Keith M, Pace RM, Williams JE, Ley SH, Barbosa-Leiker C, Caffé B, Smith CB, Kunkle A, Lackey KA, Navarrete AD, Pace CDW, Gogel AC, Eisenberg DT, Fehrenkamp BD, McGuire MA, McGuire MK, Meehan CL, Brindle E. SARS-CoV-2 specific antibody trajectories in mothers and infants over two months following maternal infection. Front Immunol 2022; 13:1015002. [PMID: 36304449 PMCID: PMC9596287 DOI: 10.3389/fimmu.2022.1015002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 09/22/2022] [Indexed: 12/15/2022] Open
Abstract
Infants exposed to caregivers infected with SARS-CoV-2 may have heightened infection risks relative to older children due to their more intensive care and feeding needs. However, there has been limited research on COVID-19 outcomes in exposed infants beyond the neonatal period. Between June 2020 - March 2021, we conducted interviews and collected capillary dried blood spots from 46 SARS-CoV-2 infected mothers and their infants (aged 1-36 months) for up to two months following maternal infection onset (COVID+ group, 87% breastfeeding). Comparative data were also collected from 26 breastfeeding mothers with no known SARS-CoV-2 infection or exposures (breastfeeding control group), and 11 mothers who tested SARS-CoV-2 negative after experiencing symptoms or close contact exposure (COVID- group, 73% breastfeeding). Dried blood spots were assayed for anti-SARS-CoV-2 S-RBD IgG and IgA positivity and anti-SARS-CoV-2 S1 + S2 IgG concentrations. Within the COVID+ group, the mean probability of seropositivity among infant samples was lower than that of corresponding maternal samples (0.54 and 0.87, respectively, for IgG; 0.33 and 0.85, respectively, for IgA), with likelihood of infant infection positively associated with the number of maternal symptoms and other household infections reported. COVID+ mothers reported a lower incidence of COVID-19 symptoms among their infants as compared to themselves and other household adults, and infants had similar PCR positivity rates as other household children. No samples returned by COVID- mothers or their infants tested antibody positive. Among the breastfeeding control group, 44% of mothers but none of their infants tested antibody positive in at least one sample. Results support previous research demonstrating minimal risks to infants following maternal COVID-19 infection, including for breastfeeding infants.
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Affiliation(s)
- Melanie A. Martin
- Department of Anthropology, University of Washington, Seattle, WA, United States,Center for Studies in Demography and Ecology, University of Washington, Seattle, WA, United States,*Correspondence: Melanie A. Martin,
| | - Monica Keith
- Department of Anthropology, University of Washington, Seattle, WA, United States,Center for Studies in Demography and Ecology, University of Washington, Seattle, WA, United States
| | - Ryan M. Pace
- Margaret Ritchie School of Family and Consumer Sciences, University of Idaho, Moscow, ID, United States
| | - Janet E. Williams
- Department of Animal, Veterinary and Food Sciences, University of Idaho, Moscow, ID, United States
| | - Sylvia H. Ley
- Department of Epidemiology, Tulane University School of Public Health, New Orleans, LA, United States
| | - Celestina Barbosa-Leiker
- College of Nursing, Washington State University Health Sciences Spokane, Spokane, WA, United States
| | - Beatrice Caffé
- Department of Anthropology, Washington State University, Pullman, WA, United States
| | - Caroline B. Smith
- Department of Anthropology, Washington State University, Pullman, WA, United States
| | - Amanda Kunkle
- Department of Anthropology, University of Washington, Seattle, WA, United States
| | - Kimberly A. Lackey
- Margaret Ritchie School of Family and Consumer Sciences, University of Idaho, Moscow, ID, United States
| | - Alexandra D. Navarrete
- Elson S. Floyd College of Medicine, Washington State University, Spokane, WA, United States
| | - Christina D. W. Pace
- Margaret Ritchie School of Family and Consumer Sciences, University of Idaho, Moscow, ID, United States
| | - Alexandra C. Gogel
- Margaret Ritchie School of Family and Consumer Sciences, University of Idaho, Moscow, ID, United States
| | - Dan T.A. Eisenberg
- Department of Anthropology, University of Washington, Seattle, WA, United States,Center for Studies in Demography and Ecology, University of Washington, Seattle, WA, United States
| | - Bethaney D. Fehrenkamp
- Margaret Ritchie School of Family and Consumer Sciences, University of Idaho, Moscow, ID, United States,Washington, Wyoming, Alaska, Montana and Idaho (WWAMI) Medical Education, University of Idaho, Moscow, ID, United States
| | - Mark A. McGuire
- Department of Animal, Veterinary and Food Sciences, University of Idaho, Moscow, ID, United States
| | - Michelle K. McGuire
- Margaret Ritchie School of Family and Consumer Sciences, University of Idaho, Moscow, ID, United States
| | - Courtney L. Meehan
- Department of Anthropology, Washington State University, Pullman, WA, United States
| | - Eleanor Brindle
- Center for Studies in Demography and Ecology, University of Washington, Seattle, WA, United States,Maternal, Newborn and Child Health & Nutrition, PATH, Seattle, WA, United States
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8
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Baggio S, Togni G, Eckerle I, Vuillemier N, Kaiser L, Gétaz L. Feasibility of home-based ELISA capillary blood self-testing for anti-SARS-CoV-2 antibodies. Pract Lab Med 2022; 31:e00290. [PMID: 35846110 PMCID: PMC9273287 DOI: 10.1016/j.plabm.2022.e00290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 06/17/2022] [Accepted: 07/08/2022] [Indexed: 11/28/2022] Open
Abstract
Objectives Serological assays for the presence of anti-SARS-CoV-2 antibodies are crucially needed for research and monitoring of the SARS-CoV-2 pandemic. Antibodies are reliability detected in capillary blood, a minimally invasive and cost-effective alternative to venous blood testing. However, there is a limited knowledge on feasibility of capillary blood self-sampling. This study compared the feasibility of capillary blood self-testing in people aged less than 65 vs. people aged 65 or more. A secondary aim was to investigate the performance of the Hem-Col® (no additive) device compared to venous blood testing. Design and methods Data were collected in a prospective study in Switzerland (n = 106). Capillary blood was collected using the Hem-Col® (no additive) device. Feasibility was assessed using 1) collecting the recommended amount of capillary blood and 2) achieving all steps of capillary blood collection. A sample of 5 ml of venous blood was also collected. Results For the primary objective, 86.2%/62.1% of patients aged less than 65 collected the recommended amount of capillary blood/achieved all steps vs. 62.5%/39.6% of patients aged 65 or more (p = .006/p = .022). For the secondary objective, the correlation between capillary and venous blood was r = 0.992 and kappa = 1. Conclusions Capillary blood self-testing appeared as a feasible and reliable alternative to venous blood testing. Such alternative would improve access to serological testing and spare health care resources. However, the difference between age groups should be considered when using self-sampling devices. Help should be developed for older people, such as phone counseling or encouraging asking younger family members for help. Evidence of the feasibility of capillary blood self-testing is scarce. Capillary blood self-testing appeared as reliable and feasible alternative. Older people (aged 65 or more) were more likely to fail than younger people.
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Affiliation(s)
- Stéphanie Baggio
- Division of Prison Health, Geneva University Hospitals and University of Geneva, Geneva, Switzerland.,Institute of Primary Health Care (BIHAM), University of Bern, Bern, Switzerland
| | | | - Isabella Eckerle
- Department of Molecular Medicine and Microbiology, Faculty of Medicine, University of Geneva, Geneva, Switzerland.,Center for Emerging Viral Diseases, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland.,Division of Infectious Diseases, Department of Medicine, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland.,Laboratory of Virology, Division of Laboratory Medicine, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
| | - Nicolas Vuillemier
- Division of Laboratory Medicine, Department of Diagnostics, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland.,Division of Laboratory Medicine, Department of Medical Specialties, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
| | - Laurent Kaiser
- Center for Emerging Viral Diseases, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland.,Division of Infectious Diseases, Department of Medicine, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland.,Department of Medicine, Faculty of Medicine, University of Geneva, Switzerland
| | - Laurent Gétaz
- Division of Prison Health, Geneva University Hospitals and University of Geneva, Geneva, Switzerland.,Division of Tropical and Humanitarian Medicine, Geneva University Hospitals, Geneva, Switzerland
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Dried blood spot specimens for SARS-CoV-2 antibody testing: A multi-site, multi-assay comparison. PLoS One 2021; 16:e0261003. [PMID: 34874948 PMCID: PMC8651133 DOI: 10.1371/journal.pone.0261003] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 11/23/2021] [Indexed: 11/19/2022] Open
Abstract
The true severity of infection due to COVID-19 is under-represented because it is based on only those who are tested. Although nucleic acid amplifications tests (NAAT) are the gold standard for COVID-19 diagnostic testing, serological assays provide better population-level SARS-CoV-2 prevalence estimates. Implementing large sero-surveys present several logistical challenges within Canada due its unique geography including rural and remote communities. Dried blood spot (DBS) sampling is a practical solution but comparative performance data on SARS-CoV-2 serological tests using DBS is currently lacking. Here we present test performance data from a well-characterized SARS-CoV-2 DBS panel sent to laboratories across Canada representing 10 commercial and 2 in-house developed tests for SARS-CoV-2 antibodies. Three commercial assays identified all positive and negative DBS correctly corresponding to a sensitivity, specificity, positive predictive value, and negative predictive value of 100% (95% CI = 72.2, 100). Two in-house assays also performed equally well. In contrast, several commercial assays could not achieve a sensitivity greater than 40% or a negative predictive value greater than 60%. Our findings represent the foundation for future validation studies on DBS specimens that will play a central role in strengthening Canada's public health policy in response to COVID-19.
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