scholarly journals Effect of ambient air pollutants and meteorological factors on COVID-19 transmission

2020 ◽  
Author(s):  
Ying Jiang ◽  
Xiao-Long Xu ◽  
Da-Wei Dai ◽  
Xiao-Jun Wu ◽  
Jun-Yu Wang ◽  
...  
Keyword(s):  
Cohort Study ◽  
Retrospective Cohort Study ◽  
Air Pollutants ◽  
Retrospective Cohort ◽  
Meteorological Factors ◽  
Ambient Air ◽  
Facial Mask ◽  
Transmission Process ◽  
Ambient Air Pollutants ◽  
Tight Correlation

Abstract Background Since its first appearance in Wuhan China in December 2019, the coronavirus disease 2019 (COVID-19) has become a worldwide pandemic. Although the COVID-19 is known to cause by human-to-human transmission, it remains largely unclear whether ambient air pollutants and meteorological factors could promote its transmission process. Methods We conducted a retrospective cohort study to understand the correlation between COVID-19 incidence and eight ambient air pollutants (PM2.5, PM10, SO2, CO, NO2, and O3-8 h) and three meteorological variables (temperature, humidity and wind level) in China’s two worst-hit cities, Wuhan and XiaoGan, between Jan 25th to Feb 29th in 2020. Results Our data showed that the COVID-19 incidence was constantly correlated with PM2.5, NO2 and local temperature in both cities. Specifically, in Wuhan, the tightest correlation was observed between NO2 and COVID-19 incidence (R2 = 0.329, p < 0.01). The PM2.5 and CO also present tight correlation with the incidence number, whose R2 equaled 0.174 (p < 0.01) and 0.203 (p < 0.05), respectively. In XiaoGan, in addition to the PM2.5 (R2 = 0.23, p < 0.01) and NO2 (R2 = 0.158, p < 0.05), a notable correlation was also observed between the PM10 and incidence cases (R2 = 0.158, p < 0.05). Moreover, temperature is the only meteorological factors that constantly correlated well with COVID-19 incidence in both Wuhan and XiaoGan, but in a negative pattern (R2 = 0.126 and 0.13, respectively, both p < 0.05). Conclusion Our data concludes that ambient air pollutants, especially PM2.5 and NO2, and temperature are three variables that could potential promote the sustained transmission of COVID-19. Thus, personal protective devices, especially the facial mask and eye goggle, shall be suggested to residents for SARS-CoV-2 protection in highly polluted regions.

scholarly journals Association Between Ambient Air Pollutants Exposure and Preterm Birth in Women Who Underwent in vitro Fertilization: A Retrospective Cohort Study From Hangzhou, China

2021 ◽  
Vol 8 ◽  
Author(s):  
Wenming Shi ◽  
Meiyan Jiang ◽  
Lena Kan ◽  
Tiantian Zhang ◽  
Qiong Yu ◽  
...  
Keyword(s):  
Cohort Study ◽  
Preterm Birth ◽  
Retrospective Cohort Study ◽  
Air Pollutants ◽  
Retrospective Cohort ◽  
Oocyte Retrieval ◽  
Ambient Air ◽  
Ambient Air Pollutants ◽  
Increased Risk

Objectives: Exposure to air pollutants has been linked to preterm birth (PTB) after natural conception. However, few studies have explored the effects of air pollution on PTB in patients who underwent in vitro fertilization (IVF). We aimed to investigate the association between ambient air pollutants exposure and PTB risk in IVF patients.Methods: This retrospective cohort study included 2,195 infertile women who underwent IVF treatment from January 2017 and September 2020 in Hangzhou Women's Hospital. Totally 1,005 subjects who underwent a first fresh embryo(s) transfer cycle were analyzed in this study. Residential exposure to ambient six air pollutants (PM2.5, PM10, SO2, NO2, CO, O3) during various periods of the IVF timeline were estimated by satellite remote-sensing and ground measurement. Cox proportional hazards models for discrete time were used to explore the association between pollutants exposure and incident PTB, with adjustment for confounders. Stratified analyses were employed to explore the effect modifiers.Results: The clinical pregnancy and PTB rates were 61.2 and 9.3%, respectively. We found that PM2.5 exposure was significantly associated with an increased risk of PTB during 85 days before oocyte retrieval [period A, adjusted hazard ratio, HR=1.09, 95%CI: 1.02–1.21], gonadotropin start to oocyte retrieval [period B, 1.07 (1.01–1.19)], first trimester of pregnancy [period F, 1.06 (1.01–1.14)], and the entire IVF pregnancy [period I, 1.07 (1.01–1.14)], respectively. An interquartile range increment in PM10 during periods A and B was significantly associated with PTB at 1.15 (1.04–1.36), 1.12 (1.03–1.28), and 1.14 (1.01–1.32) for NO2 during period A. The stratified analysis showed that the associations were stronger for women aged &lt;35 years and those who underwent two embryos transferred.Conclusions: Our study suggests ambient PM2.5, PM10, and NO2 exposure were significantly associated with elevated PTB risk in IVF patients, especially at early stages of IVF cycle and during pregnancy.

scholarly journals Childhood Exposure to Ambient Air Pollutants and the Onset of Asthma: An Administrative Cohort Study in Québec

2016 ◽  
Vol 124 (8) ◽  
pp. 1276-1282 ◽  
Author(s):  
Louis-Francois Tétreault ◽  
Marieve Doucet ◽  
Philippe Gamache ◽  
Michel Fournier ◽  
Allan Brand ◽  
...  
Keyword(s):  
Cohort Study ◽  
Air Pollutants ◽  
Ambient Air ◽  
Childhood Exposure ◽  
Ambient Air Pollutants

scholarly journals Effect of ambient air pollutants and meteorological factors on COVID-19 transmission

2020 ◽  
Author(s):  
Ying Jiang ◽  
Xiao-Long Xu ◽  
Da-Wei Dai ◽  
Xiao-Jun Wu ◽  
Jun-Yu Wang ◽  
...  
Keyword(s):  
Air Pollutants ◽  
Meteorological Factors ◽  
Ambient Air ◽  
Ambient Air Pollutants

Abstract The authors have withdrawn this preprint due to author disagreement.

Exposure to Ambient Air Pollutants and the Onset of Dementia: An Administrative Cohort Study in Québec

2018 ◽  
Vol 2018 (1) ◽  
Author(s):  
Audrey Smargiassi ◽  
Celine Plante ◽  
Philippe Gamache ◽  
Rick Burnett ◽  
Larisa Ines Yankoty ◽  
...  
Keyword(s):  
Cohort Study ◽  
Air Pollutants ◽  
Ambient Air ◽  
Ambient Air Pollutants

Association of long-term exposure to ambient air pollutants with prolonged sleep latency: The Henan Rural Cohort Study

2020 ◽  
Vol 191 ◽  
pp. 110116
Author(s):  
Yan Wang ◽  
Xiaotian Liu ◽  
Gongbo Chen ◽  
Runqi Tu ◽  
Tanko Abdulai ◽  
...  
Keyword(s):  
Cohort Study ◽  
Air Pollutants ◽  
Sleep Latency ◽  
Ambient Air ◽  
Ambient Air Pollutants

scholarly journals Incidence of osteoporosis and ambient air pollution in South Korea: a population-based retrospective cohort study

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Jinyoung Shin ◽  
Hyuk Jung Kweon ◽  
Kyoung Ja Kwon ◽  
Seol-Heui Han
Keyword(s):  
Air Pollution ◽  
Cohort Study ◽  
Retrospective Cohort Study ◽  
Retrospective Cohort ◽  
Ambient Air ◽  
Population Based ◽  
Cox Proportional Hazards ◽  
Ambient Air Pollution ◽  
Newly Diagnosed ◽  
Residential Areas

Abstract Background This study investigated the associations between exposure to ambient air pollutants and the incidence of osteoporosis using the Korean National Insurance Service–National Sample Cohort. Methods This nationwide, population-based, retrospective cohort study included 237,149 adults aged ≥40 years that did not have a diagnosis of osteoporosis at baseline between January 1, 2003, and December 31, 2015. Osteoporosis was defined as claim codes and prescriptions of bisphosphonates or selective estrogen receptor modulators at least twice annually. After matching values for PM10, NO2, CO, and SO2 during the 2002–2015 time period and PM2.5 in 2015 with residential areas, the incidence of osteoporosis was analyzed using a Cox proportional hazards regression model according to the quartile of average yearly concentrations of pollutants. Results Overall 22.2% of the study subjects, 52,601 (male: 5.6%, female: 37.6%) adults in total, were newly diagnosed with osteoporosis and treated. Exposure to PM10 was positively associated with incidence of osteoporosis (Q4: 1798 per 100,000 person-years vs. Q1: 1655 per 100,000 person-years). The adjusted hazard ratio (HR) with 95% confidence interval (CI) of Q4 in PM10 was 1.034 (1.009–1.062). The effect of PM10 on osteoporosis incidence was distinct in females (adjusted sub-HR: 1.065, 95% CI: 1.003–1.129), subjects aged < 65 years (adjusted sub-HR: 1.040, 95% CI: 1.010–1.072), and for residents in areas with low urbanization (adjusted sub-HR: 1.052, 95% CI: 1.019–1.087). However, there was no increase in osteoporosis based on exposure to NO2, CO, SO2, or PM2.5. Conclusions Long-term exposure to PM10 was associated with newly diagnosed osteoporosis in Korean adults aged ≥40 years. This finding can aid in policy-making that is directed to control air pollution as a risk factor for bone health.

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