Based on the number of asthmatic children in the Children's Hospital of Yulin City,the monitoring data of daily pollen concentration,and routine meteorological and environmental monitoring data of Yulin City from ...Based on the number of asthmatic children in the Children's Hospital of Yulin City,the monitoring data of daily pollen concentration,and routine meteorological and environmental monitoring data of Yulin City from 2020 to 2022,the meteorological and environmental conditions of a thunderstorm asthma event in Yulin City in northern Shaanxi on September 9,2022 were analyzed.The results show that the strong convective weather was accompanied by a strong thunderstorm,lightning,gusts,short-time heavy precipitation and small hail,and the convective activity lasted for nearly 7 h.The short-term abrupt change of allergenic substances such as artemisia pollen caused by lightning,gusts and precipitation,the sudden drop in temperature,the inversion near the surface and the stimulation of cold air were the key meteorological conditions for the subsequent outbreak of asthma.In early September in 2022,the daily average pollen concentration in Yulin City was up to 1067.9 particles/1000 mm^(2),which was 113.3%and 41.2%higher than that of the same period in 2021 and 2020,respectively.The day before the thunderstorm,the pollen concentration soared to 2680 particles/1000 mm^(2),reaching the maximum of the year.The synergistic effect of the thunderstorm event and the sharp increase in pollen concentration on the previous day provided the background of heavy pollen pollution for this outbreak of thunderstorm asthma.O_(3)concentration was consistently high on the day of thunderstorm and the day before,and the peaks of O_(3)and PM 10 concentration appeared subsequently in the afternoon of the day,which became the background of air pollution for the asthma outbreak.展开更多
Introduction:On April 1,2024,a severe thunderstorm occurred in Chongqing,followed by a surge in patients with suspected asthma presenting to the Emergency Department of the First Affiliated Hospital of Chongqing Medic...Introduction:On April 1,2024,a severe thunderstorm occurred in Chongqing,followed by a surge in patients with suspected asthma presenting to the Emergency Department of the First Affiliated Hospital of Chongqing Medical University.A retrospective investigation was conducted to identify the causes and risk factors of this incident,aiming to guide the prevention and control of similar events.Methods:A questionnaire was designed for telephone follow-up to collect basic information,disease onset characteristics,and residential environment data from patients and their cohabitants.Descriptive analysis and a retrospective case-control study were employed to analyze epidemiological features and risk factors.Meteorological data and environmental indices were concurrently collected.Results:Ninety suspected thunderstorm asthma(TA)cases were identified,with disease onset predominantly clustered between 21:00 on April 1,2024 and 03:00 on April 2,2024.The epidemic curve suggested a point-source exposure or short-term continuous exposure pattern.Among 57 clinically diagnosed TA cases and 111 controls,multivariate analysis revealed allergic rhinitis as an independent risk factor for thunderstorm asthma[odds ratio(OR)=13.129,95%confidence interval(CI):2.782,61.960].Conclusion:Based on epidemiological investigation,environmental assessment,and laboratory testing results,this incident was classified as a thunderstorm asthma event,with allergic rhinitis identified as an independent risk factor.展开更多
基金Supported by the People's Government of Yulin City(2023-SF-09)Yulin Meteorological Bureau(2024Y-02)Open Research Fund Project of Key Laboratory of Ecological Environment and Meteorology in the Qinling Mountains and Loess Plateau(2022Y-21).
文摘Based on the number of asthmatic children in the Children's Hospital of Yulin City,the monitoring data of daily pollen concentration,and routine meteorological and environmental monitoring data of Yulin City from 2020 to 2022,the meteorological and environmental conditions of a thunderstorm asthma event in Yulin City in northern Shaanxi on September 9,2022 were analyzed.The results show that the strong convective weather was accompanied by a strong thunderstorm,lightning,gusts,short-time heavy precipitation and small hail,and the convective activity lasted for nearly 7 h.The short-term abrupt change of allergenic substances such as artemisia pollen caused by lightning,gusts and precipitation,the sudden drop in temperature,the inversion near the surface and the stimulation of cold air were the key meteorological conditions for the subsequent outbreak of asthma.In early September in 2022,the daily average pollen concentration in Yulin City was up to 1067.9 particles/1000 mm^(2),which was 113.3%and 41.2%higher than that of the same period in 2021 and 2020,respectively.The day before the thunderstorm,the pollen concentration soared to 2680 particles/1000 mm^(2),reaching the maximum of the year.The synergistic effect of the thunderstorm event and the sharp increase in pollen concentration on the previous day provided the background of heavy pollen pollution for this outbreak of thunderstorm asthma.O_(3)concentration was consistently high on the day of thunderstorm and the day before,and the peaks of O_(3)and PM 10 concentration appeared subsequently in the afternoon of the day,which became the background of air pollution for the asthma outbreak.
基金supported by the National Natural Science Foundation(Grant Number NSFC.12371503)the National Public Health Talent Training Support Project,China,2024,which is funded by the National Disease Control and Prevention Administration.
文摘Introduction:On April 1,2024,a severe thunderstorm occurred in Chongqing,followed by a surge in patients with suspected asthma presenting to the Emergency Department of the First Affiliated Hospital of Chongqing Medical University.A retrospective investigation was conducted to identify the causes and risk factors of this incident,aiming to guide the prevention and control of similar events.Methods:A questionnaire was designed for telephone follow-up to collect basic information,disease onset characteristics,and residential environment data from patients and their cohabitants.Descriptive analysis and a retrospective case-control study were employed to analyze epidemiological features and risk factors.Meteorological data and environmental indices were concurrently collected.Results:Ninety suspected thunderstorm asthma(TA)cases were identified,with disease onset predominantly clustered between 21:00 on April 1,2024 and 03:00 on April 2,2024.The epidemic curve suggested a point-source exposure or short-term continuous exposure pattern.Among 57 clinically diagnosed TA cases and 111 controls,multivariate analysis revealed allergic rhinitis as an independent risk factor for thunderstorm asthma[odds ratio(OR)=13.129,95%confidence interval(CI):2.782,61.960].Conclusion:Based on epidemiological investigation,environmental assessment,and laboratory testing results,this incident was classified as a thunderstorm asthma event,with allergic rhinitis identified as an independent risk factor.
