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Katz DSW, Zigler CM, Bhavnani D, Balcer-Whaley S, Matsui EC. Pollen and viruses contribute to spatio-temporal variation in asthma-related emergency department visits. ENVIRONMENTAL RESEARCH 2024; 257:119346. [PMID: 38838752 PMCID: PMC11268730 DOI: 10.1016/j.envres.2024.119346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 05/25/2024] [Accepted: 06/03/2024] [Indexed: 06/07/2024]
Abstract
BACKGROUND Asthma exacerbations are an important cause of emergency department visits but much remains unknown about the role of environmental triggers including viruses and allergenic pollen. A better understanding of spatio-temporal variation in exposure and risk posed by viruses and pollen types could help prioritize public health interventions. OBJECTIVE Here we quantify the effects of regionally important Cupressaceae pollen, tree pollen, other pollen types, rhinovirus, seasonal coronavirus, respiratory syncytial virus, and influenza on asthma-related emergency department visits for people living near eight pollen monitoring stations in Texas. METHODS We used age stratified Poisson regression analyses to quantify the effects of allergenic pollen and viruses on asthma-related emergency department visits. RESULTS Young children (<5 years of age) had high asthma-related emergency department rates (24.1 visits/1,000,000 person-days), which were mainly attributed to viruses (51.2%). School-aged children also had high rates (20.7 visits/1,000,000 person-days), which were attributed to viruses (57.0%), Cupressaceae pollen (0.7%), and tree pollen (2.8%). Adults had lower rates (8.1 visits/1,000,000 person-days) which were attributed to viruses (25.4%), Cupressaceae pollen (0.8%), and tree pollen (2.3%). This risk was spread unevenly across space and time; for example, during peak Cuppressaceae season, this pollen accounted for 8.2% of adult emergency department visits near Austin where these plants are abundant, but 0.4% in cities like Houston where they are not; results for other age groups were similar. CONCLUSIONS Although viruses are a major contributor to asthma-related emergency department visits, airborne pollen can explain a meaningful portion of visits during peak pollen season and this risk varies over both time and space because of differences in plant composition.
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Affiliation(s)
- Daniel S W Katz
- The Department of Population Health and Data Sciences, Dell Medical School, University of Texas at Austin, United States; The School of Integrative Plant Science, Cornell University, United States.
| | - Corwin M Zigler
- The Department of Statistics and Data Sciences, Dell Medical School, University of Texas at Austin, United States
| | - Darlene Bhavnani
- The Department of Population Health and Data Sciences, Dell Medical School, University of Texas at Austin, United States
| | - Susan Balcer-Whaley
- The Department of Population Health and Data Sciences, Dell Medical School, University of Texas at Austin, United States
| | - Elizabeth C Matsui
- The Department of Population Health and Data Sciences, Dell Medical School, University of Texas at Austin, United States
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Allergic and non-allergic asthma in children hospitalized in the University Children’s Hospital in Lublin in 2016-2020. CURRENT ISSUES IN PHARMACY AND MEDICAL SCIENCES 2022. [DOI: 10.2478/cipms-2022-0009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Abstract
Introduction. Bronchial asthma is a common disease characterized by chronic inflammation of the airways. Paediatric asthma is still a current problem and children with exacerbation frequently are hospitalized. The aim of the study was to determine the prevalence of allergic and non-allergic asthma in children hospitalized at the Department of Paediatric Pulmonology and Rheumatology of the University Children’s Hospital in Lublin in 2016-2020, and to analyze the most common allergens associated with allergic asthma.
Materials and methods. The study group consisted of 667 patients, aged 6 to 215 months (average 64 months). The data collected for this retrospective study includes: gender, age, month, quarter of year, and year of hospitalization, type of asthma and type of allergens.
Results. We observed a decrease of hospitalization in the analyzed years: in 2016 – 160 children, and in 2020 – 74. Children with allergic asthma (375 children) were more frequently hospitalized than patients with non-allergic asthma, and we found correlations between age and type of asthma and between age and type of allergy. Non-allergic asthma was observed in the youngest children, while in older children, allergic-asthma dominated. We also observed significant differences in children’s hospitalization depending on the season of the year. The most frequent allergen causing asthma was house dust mites.
Conclusions. The incidence of hospitalizations caused by asthma exacerbation is declining. Among the youngest population, exacerbations of asthma related to respiratory tract infection predominate, while in the older, allergy to inhalation allergens is the main cause.
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Hu YB, Chen YT, Liu SJ, Jiang F, Wu MQ, Yan CH, Tan JG, Yu GJ, Hu Y, Yin Y, Qu JJ, Li SH, Tong SL. Increasing prevalence and influencing factors of childhood asthma: a cross-sectional study in Shanghai, China. World J Pediatr 2021; 17:419-428. [PMID: 34110593 DOI: 10.1007/s12519-021-00436-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 05/19/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Asthma has been a global problem, especially in children. We aim to evaluate the contemporary prevalence and influencing factors of asthma among children aged 3-7 years in Shanghai, China. METHODS A random sample of preschool children was included in this study. The International Study of Asthma and Allergies in Childhood questionnaire was adopted to assess the childhood asthma. Multivariable logistic regression models were used to evaluate the associations between independent variables and childhood asthma. RESULTS Of 6389 preschool children who were invited to take part in this study, 6163 (response rate: 96.5%) completed the questionnaire and were included in the analysis. The overall prevalence of asthma was 14.6% which increased more than six folds from 2.1% in 1990. Being male, younger age, preterm delivery, being born in spring or autumn, being delivered by elective cesarean section without indication, miscarriage, high socioeconomic status, having allergy history, and exposure to passive smoking, latex paint, and dust were potential risk factors for childhood asthma. Spending more time outdoors (> 30 min/day), having indoor plants, and cleaning rooms more frequently were potential protective factors. CONCLUSIONS The prevalence of childhood asthma in Shanghai has increased dramatically during the past three decades. The findings about risk and protective factors of childhood asthma could be used to develop appropriate strategies to prevent and control childhood asthma in Shanghai and in other similar metropolitan cities.
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Affiliation(s)
- Ya-Bin Hu
- Department of Clinical Epidemiology and Biostatistics, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Child Health Advocacy Institute, China Hospital Development Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Yi-Ting Chen
- School of Public Health, Shanghai Jiao Tong University School of Medicine, 227 South Chongqing Road, Huangpu, Shanghai, 200025, China
| | - Shi-Jian Liu
- Department of Clinical Epidemiology and Biostatistics, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Child Health Advocacy Institute, China Hospital Development Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Fan Jiang
- Department of Developmental and Behavioral Pediatrics, Pediatric Translational Medicine Institution, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Mei-Qin Wu
- MOE-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chong-Huai Yan
- MOE-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jian-Guo Tan
- Shanghai Key Laboratory of Meteorology and Health (Shanghai Meteorological Service), Shanghai, China
| | - Guang-Jun Yu
- Center for Biomedical Informatics, Shanghai Children's Hospital, Shanghai, China
| | - Yi Hu
- Center for Biomedical Informatics, Shanghai Children's Hospital, Shanghai, China
| | - Yong Yin
- Department of Respiratory Medicine, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jia-Jie Qu
- Shanghai Municipal Education Commission, Shanghai, China
| | - Sheng-Hui Li
- School of Public Health, Shanghai Jiao Tong University School of Medicine, 227 South Chongqing Road, Huangpu, Shanghai, 200025, China.
| | - Shi-Lu Tong
- Department of Clinical Epidemiology and Biostatistics, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Child Health Advocacy Institute, China Hospital Development Institute, Shanghai Jiao Tong University, Shanghai, China
- School of Public Health, Institute of Environment and Population Health, Anhui Medical University, Hefei, China
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, China
- School of Public Health and Social Work, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia
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