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Cheung KS, Lam LK, Mao X, Tan JT, Ooi PH, Zhang R, Chan KH, Hung IFN, Seto WK, Yuen MF. Effect of Moderate to Severe Hepatic Steatosis on Vaccine Immunogenicity against Wild-Type and Mutant Virus and COVID-19 Infection among BNT162b2 Recipients. Vaccines (Basel) 2023; 11:497. [PMID: 36992081 PMCID: PMC10054100 DOI: 10.3390/vaccines11030497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/18/2023] [Accepted: 02/20/2023] [Indexed: 02/24/2023] Open
Abstract
BACKGROUND We aimed to investigate the effect of non-alcoholic fatty liver disease (NAFLD) on BNT162b2 immunogenicity against wild-type SARS-CoV-2 and variants and infection outcome, as data are lacking. METHODS Recipients of two doses of BNT162b2 were prospectively recruited. Outcomes of interest were seroconversion of neutralizing antibody by live virus microneutralization (vMN) to SARS-CoV-2 strains (wild-type, delta and omicron variants) at day 21, 56 and 180 after first dose. Exposure of interest was moderate-to-severe NAFLD (controlled attenuation parameter ≥ 268 dB/M on transient elastography). We calculated adjusted odds ratio (aOR) of infection with NAFLD by adjusting for age, sex, overweight/obesity, diabetes and antibiotic use. RESULTS Of 259 BNT162b2 recipients (90 (34.7%) male; median age: 50.8 years (IQR: 43.6-57.8)), 68 (26.3%) had NAFLD. For wild type, there was no difference in seroconversion rate between NAFLD and control groups at day 21 (72.1% vs. 77.0%; p = 0.42), day 56 (100% vs. 100%) and day 180 (100% and 97.2%; p = 0.22), respectively. For the delta variant, there was no difference also at day 21 (25.0% vs. 29.5%; p = 0.70), day 56 (100% vs. 98.4%; p = 0.57) and day 180 (89.5% vs. 93.3%; p = 0.58), respectively. For the omicron variant, none achieved seroconversion at day 21 and 180. At day 56, there was no difference in seroconversion rate (15.0% vs. 18.0%; p = 0.76). NAFLD was not an independent risk factor of infection (aOR: 1.50; 95% CI: 0.68-3.24). CONCLUSIONS NAFLD patients receiving two doses of BNT162b2 had good immunogenicity to wild-type SARS-CoV-2 and the delta variant but not the omicron variant, and they were not at higher risk of infection compared with controls.
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Affiliation(s)
- Ka Shing Cheung
- Department of Medicine, School of Clinical Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong
- Department of Medicine, The University of Hong Kong, Shenzhen Hospital, Shenzhen 518009, China
| | - Lok Ka Lam
- Department of Medicine, School of Clinical Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong
| | - Xianhua Mao
- Department of Medicine, School of Clinical Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong
| | - Jing Tong Tan
- Department of Medicine, School of Clinical Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong
| | - Poh Hwa Ooi
- Department of Medicine, School of Clinical Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong
| | - Ruiqi Zhang
- Department of Medicine, School of Clinical Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong
| | - Kwok Hung Chan
- Department of Microbiology, The University of Hong Kong, Queen Mary Hospital, Hong Kong
| | - Ivan F. N. Hung
- Department of Medicine, School of Clinical Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong
| | - Wai Kay Seto
- Department of Medicine, School of Clinical Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong
- Department of Medicine, The University of Hong Kong, Shenzhen Hospital, Shenzhen 518009, China
- State Key Laboratory of Liver Research, The University of Hong Kong, Hong Kong
| | - Man Fung Yuen
- Department of Medicine, School of Clinical Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong
- State Key Laboratory of Liver Research, The University of Hong Kong, Hong Kong
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Conners RT, Whitehead PN, Skarp T, Waller B, Richard M, Bain C, Monks M, Faghy MA. Acute Effects of Facial Coverings on Anaerobic Exercise Performance in College-Aged Adults. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:10500. [PMID: 36078215 PMCID: PMC9517774 DOI: 10.3390/ijerph191710500] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 08/17/2022] [Accepted: 08/19/2022] [Indexed: 06/15/2023]
Abstract
The use of facial coverings has been amplified during the COVID-19 pandemic as a means to minimize the spread of disease. However, facial coverings may impede ventilation during high-intensity activity, leading to a reduction in cardiopulmonary exercise capacity. Thus, the purpose of this study was to determine the acute impact of different facial coverings on exercise performance in college-aged individuals during a 300-yard shuttle. It was hypothesized that the lowest heart rate (HR), completion time (CT), and rate of perceived exertion (RPE) would occur with no mask. Furthermore, it was hypothesized the SHEMA97 mask would have lower HR, CT, and RPE compared to surgical and fabric masks. Results showed the use of the fabric mask resulted in significantly higher HR compared to no mask (p = 0.006). The SHEMA97 mask resulted in faster CT and lower RPE compared to both the fabric and surgical masks (p < 0.001). All mask conditions yielded significantly higher levels of perceived discomfort than wearing no mask (p < 0.05). While the use of facial coverings can help prevent the spread of disease, their use during exercise may pose limitations to performance; however, the ability of the SHEMA97 to provide minimal changes to CT and RPE provides a promising option.
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Affiliation(s)
- Ryan T. Conners
- Department of Kinesiology, The University of Alabama in Huntsville, Huntsville, AL 35899, USA
| | - Paul N. Whitehead
- Department of Kinesiology, The University of Alabama in Huntsville, Huntsville, AL 35899, USA
| | - Thomas Skarp
- Department of Kinesiology, The University of Alabama in Huntsville, Huntsville, AL 35899, USA
| | - Briana Waller
- Department of Kinesiology, The University of Alabama in Huntsville, Huntsville, AL 35899, USA
| | - Mark Richard
- Department of Kinesiology, The University of Alabama in Huntsville, Huntsville, AL 35899, USA
| | - Carrington Bain
- Department of Kinesiology, The University of Alabama in Huntsville, Huntsville, AL 35899, USA
| | - Megan Monks
- Department of Kinesiology, The University of Alabama in Huntsville, Huntsville, AL 35899, USA
| | - Mark A. Faghy
- School of Human Sciences, University of Derby, Derby DE22 1GB, UK
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Degarege A, Naveed Z, Kabayundo J, Brett-Major D. Heterogeneity and Risk of Bias in Studies Examining Risk Factors for Severe Illness and Death in COVID-19: A Systematic Review and Meta-Analysis. Pathogens 2022; 11:563. [PMID: 35631084 PMCID: PMC9147100 DOI: 10.3390/pathogens11050563] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 05/02/2022] [Accepted: 05/05/2022] [Indexed: 02/07/2023] Open
Abstract
This systematic review and meta-analysis synthesized the evidence on the impacts of demographics and comorbidities on the clinical outcomes of COVID-19, as well as the sources of the heterogeneity and publication bias of the relevant studies. Two authors independently searched the literature from PubMed, Embase, Cochrane library, and CINAHL on 18 May 2021; removed duplicates; screened the titles, abstracts, and full texts by using criteria; and extracted data from the eligible articles. The variations among the studies were examined by using Cochrane, Q.; I2, and meta-regression. Out of 11,975 articles that were obtained from the databases and screened, 559 studies were abstracted, and then, where appropriate, were analyzed by meta-analysis (n = 542). COVID-19-related severe illness, admission to the ICU, and death were significantly correlated with comorbidities, male sex, and an age older than 60 or 65 years, although high heterogeneity was present in the pooled estimates. The study design, the study country, the sample size, and the year of publication contributed to this. There was publication bias among the studies that compared the odds of COVID-19-related deaths, severe illness, and admission to the ICU on the basis of the comorbidity status. While an older age and chronic diseases were shown to increase the risk of developing severe illness, admission to the ICU, and death among the COVID-19 patients in our analysis, a marked heterogeneity was present when linking the specific risks with the outcomes.
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Affiliation(s)
- Abraham Degarege
- Department of Epidemiology, College of Public Health, University of Nebraska Medical Center, Omaha, NE 68198, USA; (Z.N.); (J.K.); (D.B.-M.)
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Fauvel C, Trimaille A, Weizman O, Pezel T, Mika D, Waldmann V, Cohen A, Bonnet G. Cardiovascular manifestations secondary to COVID-19: A narrative review. Respir Med Res 2022; 81:100904. [PMID: 35525097 PMCID: PMC9065692 DOI: 10.1016/j.resmer.2022.100904] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 03/01/2022] [Accepted: 03/08/2022] [Indexed: 02/07/2023]
Abstract
The coronavirus disease 2019 (COVID-19) pandemic has spread rapidly, becoming a major threat to global health. In addition to having required the adaptation of healthcare workers for almost 2 years, it has been much talked about, both in the media and among the scientific community. Beyond lung damage and respiratory symptoms, the involvement of the cardiovascular system largely explains COVID-19 morbimortality. In this review, we emphasize that cardiovascular involvement is common and is associated with a worse prognosis, and that earlier detection by physicians should lead to better management. First, direct cardiac involvement will be discussed, in the form of COVID-19 myocarditis, then secondary cardiac involvement, such as myocardial injury, myocardial infarction and arrhythmias, will be considered. Finally, worsening of previous cardiovascular disease as a result of COVID-19 will be examined, as well as long-term COVID-19 effects and cardiovascular complications of COVID-19 vaccines.
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Affiliation(s)
- C. Fauvel
- Cardiology Department, Rouen University Hospital, Rouen 76000, France,Division of Cardiovascular Medicine, Wexner Medical Center, The Ohio State University, 410 West 10th Avenue, Columbus, OH 43210, USA,Corresponding author at: Division of Cardiovascular Medicine, Wexner Medical Center, The Ohio State University, 410 West 10th Avenue, Columbus, OH 43210, USA
| | - A. Trimaille
- Department of Cardiovascular Medicine, Nouvel Hôpital Civil, Strasbourg University Hospital, Strasbourg 67000, France
| | - O. Weizman
- Cardiology Department, Institut Lorrain du Cœur et des Vaisseaux, CHU de Nancy, 54500, France
| | - T. Pezel
- Cardiology Department, Lariboisière Hospital, AP-HP, Université de Paris, Paris 75010, France
| | - D. Mika
- Paris-Saclay University, Inserm, UMR-S 1180, Châtenay-Malabry 92296, France
| | - V. Waldmann
- Cardiology Department, Hôpital Européen Georges Pompidou, Université de Paris, Paris 75015, France
| | - A. Cohen
- Department of Cardiology, Saint Antoine and Tenon Hospital, AP-HP, INSERM UMRS-ICAN 1166 and Sorbonne University, Paris, France
| | - G. Bonnet
- Université de Bordeaux, 33000, France,Service Médico-Chirurgicale de Valvulopathies et Cardiomyopathies, Hôpital Cardiologique Haut-Lévêque, Centre Hospitalier Universitaire de Bordeaux, Pessac 33600, France
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Zhang X, Yang J, Chen S, Liu C, Wang Z, Ren H, Zhou L. Pre-existing hypertension is associated with poor progression-free survival in newly diagnosed multiple myeloma patients. J Thromb Thrombolysis 2022; 54:542-549. [PMID: 35445377 DOI: 10.1007/s11239-022-02653-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/03/2022] [Indexed: 11/29/2022]
Abstract
Approximately 31% of patients diagnosed with multiple myeloma (MM) have pre-existing hypertension, but its effects on patient survival have not been investigated. We collected data from 228 newly diagnosed patients with MM and found that 71 (31.1%) had pre-existing hypertension. The impact of pre-existing hypertension on MM patients was determined by evaluating progression-free survival (PFS). Kaplan-Meier analyses revealed a significantly lower PFS in the pre-existing hypertension group than their non-hypertensive counterparts (median 22.6 vs 34.8 months, respectively). The multivariable Cox proportional hazards model showed that pre-existing hypertension was an independent risk factor for PFS reduction in MM patients. Moreover, the risk of disease progression in MM patients with pre-existing hypertension was higher than in non-hypertension comparator patients (hazard ratio 1.735, 95% confidence interval 1.261-2.387). In MM patients with pre-existing hypertension, Kaplan-Meier analyses found that those with a higher risk of hypertension had a significantly shorter PFS than those with lower risk (median 19.3 vs 25.4 months, respectively). However, multivariate Cox regression analysis showed that the risk stratification of hypertension was not an independent risk factor for poor PFS in MM patients with pre-existing hypertension. Our study demonstrates that pre-existing hypertension was significantly associated with a lower PFS in newly diagnosed MM patients.
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Affiliation(s)
- Xiaomin Zhang
- Department of Laboratory Medicine, Shanghai Changzheng Hospital, Naval Medical University, 415 Fengyang Road, Shanghai, 200003, China
| | - Jieli Yang
- Department of Laboratory Medicine, Shanghai Changzheng Hospital, Naval Medical University, 415 Fengyang Road, Shanghai, 200003, China
| | - Sai Chen
- Department of Laboratory Medicine, Shanghai Changzheng Hospital, Naval Medical University, 415 Fengyang Road, Shanghai, 200003, China
| | - Chang Liu
- Department of Laboratory Medicine, Shanghai Changzheng Hospital, Naval Medical University, 415 Fengyang Road, Shanghai, 200003, China
| | - Zhenhua Wang
- Department of Laboratory Medicine, Shanghai Changzheng Hospital, Naval Medical University, 415 Fengyang Road, Shanghai, 200003, China
| | - Hefei Ren
- Department of Laboratory Medicine, Shanghai Changzheng Hospital, Naval Medical University, 415 Fengyang Road, Shanghai, 200003, China
| | - Lin Zhou
- Department of Laboratory Medicine, Shanghai Changzheng Hospital, Naval Medical University, 415 Fengyang Road, Shanghai, 200003, China.
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Ribeiro AC, Uehara SCDSA. Systemic arterial hypertension as a risk factor for the severe form of covid-19: scoping review. Rev Saude Publica 2022; 56:20. [PMID: 35416846 PMCID: PMC8973022 DOI: 10.11606/s1518-8787.2022056004311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Accepted: 01/10/2022] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVE Identify whether systemic arterial hypertension is a risk factor for the severe form of covid-19. METHODS This is a scoping review, searches were performed on the Lilacs, PubMed, SciELO and Web of Science databases. RESULTS Thirteen articles were selected. The studies presented systemic arterial hypertension as the most common chronic disease in subjects diagnosed with covid-19. Hypertensive subjects were older, and men were more likely to develop severe covid-19. Hypertensive subjects without antihypertensive treatment were associated with a higher risk of mortality. CONCLUSIONS subjects with chronic diseases tend to have a different clinical profile. Blood pressure should be controlled in hypertensive subjects that should be continuously monitored during the covid-19 infection.
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Affiliation(s)
- Ana Cristina Ribeiro
- Universidade Federal de São Carlos. Departamento de Enfermagem. São Carlos, SP, Brasil
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Rahman MZ, Hoque ME, Alam MR, Rouf MA, Khan SI, Xu H, Ramakrishna S. Face Masks to Combat Coronavirus (COVID-19)-Processing, Roles, Requirements, Efficacy, Risk and Sustainability. Polymers (Basel) 2022; 14:1296. [PMID: 35406172 PMCID: PMC9003287 DOI: 10.3390/polym14071296] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 02/26/2022] [Accepted: 03/14/2022] [Indexed: 02/04/2023] Open
Abstract
Increasingly prevalent respiratory infectious diseases (e.g., COVID-19) have posed severe threats to public health. Viruses including coronavirus, influenza, and so on can cause respiratory infections. A pandemic may potentially emerge owing to the worldwide spread of the virus through persistent human-to-human transmission. However, transmission pathways may vary; respiratory droplets or airborne virus-carrying particles can have a key role in transmitting infections to humans. In conjunction with social distancing, hand cleanliness, and other preventative measures, the use of face masks is considered to be another scientific approach to combat ubiquitous coronavirus. Different types of face masks are produced using a range of materials (e.g., polypropylene, polyacrylonitrile, polycarbonate, polyurethane, polystyrene, polyester and polyethylene) and manufacturing techniques (woven, knitted, and non-woven) that provide different levels of protection to the users. However, the efficacy and proper disposal/management of the used face masks, particularly the ones made of non-biodegradable polymers, pose great environmental concerns. This review compiles the recent advancements of face masks, covering their requirements, materials and techniques used, efficacy, challenges, risks, and sustainability towards further enhancement of the quality and performance of face masks.
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Affiliation(s)
- Md Zillur Rahman
- Department of Mechanical Engineering, Ahsanullah University of Science and Technology (AUST), Dhaka 1208, Bangladesh
| | - Md Enamul Hoque
- Department of Biomedical Engineering, Military Institute of Science and Technology (MIST), Dhaka 1216, Bangladesh;
| | - Md Rubel Alam
- Department of Knitwear Manufacturing and Technology, BGMEA University of Fashion and Technology (BUFT), Dhaka 1230, Bangladesh; (M.R.A.); (M.A.R.)
| | - Md Abdur Rouf
- Department of Knitwear Manufacturing and Technology, BGMEA University of Fashion and Technology (BUFT), Dhaka 1230, Bangladesh; (M.R.A.); (M.A.R.)
| | - Saiful Islam Khan
- Department of Biomedical Engineering, Military Institute of Science and Technology (MIST), Dhaka 1216, Bangladesh;
| | - Huaizhong Xu
- Department of Biobased Materials Science, Kyoto Institute of Technology (KIT), Matsugasaki Hashikamicho 1, Sakyoku, Kyoto 606-8585, Japan
| | - Seeram Ramakrishna
- Department of Mechanical Engineering, National University of Singapore (NUS), Singapore 117575, Singapore;
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COVID-19, the Pandemic of the Century and Its Impact on Cardiovascular Diseases. CARDIOLOGY DISCOVERY 2021; 1:233-258. [PMID: 34888547 PMCID: PMC8638821 DOI: 10.1097/cd9.0000000000000038] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 09/19/2021] [Indexed: 01/08/2023]
Abstract
COVID-19 caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection likely ranks among the deadliest diseases in human history. As with other coronaviruses, SARS-CoV-2 infection damages not only the lungs but also the heart and many other organs that express angiotensin-converting enzyme 2 (ACE2), a receptor for SARS-CoV-2. COVID-19 has upended lives worldwide. Dietary behaviors have been altered such that they favor metabolic and cardiovascular complications, while patients have avoided hospital visits because of limited resources and the fear of infection, thereby increasing out-hospital mortality due to delayed diagnosis and treatment. Clinical observations show that sex, age, and race all influence the risk for SARS-CoV-2 infection, as do hypertension, obesity, and pre-existing cardiovascular conditions. Many hospitalized COVID-19 patients suffer cardiac injury, acute coronary syndromes, or cardiac arrhythmia. SARS-CoV-2 infection may lead to cardiomyocyte apoptosis and necrosis, endothelial cell damage and dysfunction, oxidative stress and reactive oxygen species production, vasoconstriction, fibrotic and thrombotic protein expression, vascular permeability and microvascular dysfunction, heart inflammatory cell accumulation and activation, and a cytokine storm. Current data indicate that COVID-19 patients with cardiovascular diseases should not discontinue many existing cardiovascular therapies such as ACE inhibitors, angiotensin receptor blockers, steroids, aspirin, statins, and PCSK9 inhibitors. This review aims to furnish a framework relating to COVID-19 and cardiovascular pathophysiology.
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Ong PM, Pech C, Gutierrez NR, Mays VM. COVID-19 Medical Vulnerability Indicators: A Predictive, Local Data Model for Equity in Public Health Decision Making. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:4829. [PMID: 33946561 PMCID: PMC8124803 DOI: 10.3390/ijerph18094829] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 04/25/2021] [Accepted: 04/27/2021] [Indexed: 12/13/2022]
Abstract
This article reports the outcome of a project to develop and assess a predictive model of vulnerability indicators for COVID-19 infection in Los Angeles County. Multiple data sources were used to construct four indicators for zip code tabulation areas: (1) pre-existing health condition, (2) barriers to accessing health care, (3) built environment risk, and (4) the CDC's social vulnerability. The assessment of the indicators finds that the most vulnerable neighborhoods are characterized by significant clustering of racial minorities. An overwhelming 73% of Blacks reside in the neighborhoods with the two highest levels of pre-existing health conditions. For the barriers to accessing health care indicator, 40% of Latinx reside in the highest vulnerability places. The built environment indicator finds that selected Asian ethnic groups (63%), Latinx (55%), and Blacks (53%) reside in the neighborhoods designated as high or the highest vulnerability. The social vulnerability indicator finds 42% of Blacks and Latinx and 38% of selected Asian ethnic group residing in neighborhoods of high vulnerability. The vulnerability indicators can be adopted nationally to respond to COVID-19. The metrics can be utilized in data-driven decision making of re-openings or resource distribution such as testing, vaccine distribution and other pandemic-related resources to ensure equity for the most vulnerable.
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Affiliation(s)
- Paul M. Ong
- Department of Urban Planning, UCLA Center for Neighborhood Knowledge, UCLA Luskin School of Public Policy, Los Angeles, CA 90095, USA; (P.M.O.); (C.P.); (N.R.G.)
| | - Chhandara Pech
- Department of Urban Planning, UCLA Center for Neighborhood Knowledge, UCLA Luskin School of Public Policy, Los Angeles, CA 90095, USA; (P.M.O.); (C.P.); (N.R.G.)
| | - Nataly Rios Gutierrez
- Department of Urban Planning, UCLA Center for Neighborhood Knowledge, UCLA Luskin School of Public Policy, Los Angeles, CA 90095, USA; (P.M.O.); (C.P.); (N.R.G.)
| | - Vickie M. Mays
- Departments of Psychology and Health Policy & Management, UCLA Fielding School of Public Health, Los Angeles, CA 90095, USA
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