Effect of diurnal temperature range on the outpatient visits for acute bronchitis in children: a time-series study in Hefei, China

Xie, Mingyu; Ni, Hong; Zhao, Donghui; Cheng, Jian; Wen, Liying; Li, Kechen; Yang, Hui; Wang, Shiqi; Zhang, H.; Wang, X.; Su, Hong

doi:10.1016/j.puhe.2016.12.016

Cited by 24 publications

(13 citation statements)

References 27 publications

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“…Moreover, a study in China reported that the DTR was significantly associated with acute bronchitis (defined as an inflammation of the large bronchi mainly characterised by cough, ICD-10 codes: J20) in children, especially when it exceeded 10.9 • C; the largest effect was shown at a three-day lag, with a 1% (95% CI: 0.5, 1.6) increase of acute bronchitis cases per 1 • C increment of the DTR. Female children and children aged 0-4 years were the most vulnerable [42].…”

Section: Temperaturementioning

confidence: 99%

Climate Change and Childhood Respiratory Health: A Call to Action for Paediatricians

Cicco

Ferrante

Amato

et al. 2020

IJERPH

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Climate change (CC) is one of the main contributors to health emergencies worldwide. CC appears to be closely interrelated with air pollution, as some pollutants like carbon dioxide (CO2), nitrogen oxides (NOx) and black carbon are naturally occurring greenhouse gases. Air pollution may enhance the allergenicity of some plants and, also, has an adverse effect on respiratory health. Children are a uniquely vulnerable group that suffers disproportionately from CC burden. The increasing global warming related to CC has a big impact on plants’ lifecycles, with earlier and longer pollen seasons, as well as higher pollen production, putting children affected by asthma and allergic rhinitis at risk for exacerbations. Extreme weather events may play a role too, not only in the exacerbations of allergic respiratory diseases but, also, in favouring respiratory infections. Even though paediatricians are already seeing the impacts of CC on their patients, their knowledge about CC-related health outcomes with specific regards to children’s respiratory health is incomplete. This advocates for paediatricians’ increased awareness and a better understanding of the CC impact on children’s respiratory health. Having a special responsibility for children, paediatricians should actively be involved in policies aimed to protect the next generation from CC-related adverse health effects. Hence, there is an urgent need for them to take action and successfully educate families about CC issues. This paper aims at reviewing the evidence of CC-related environmental factors such as temperature, humidity, rainfall and extreme events on respiratory allergic diseases and respiratory infections in children and proposing specific actionable items for paediatricians to deal with CC-related health issues in their clinical practice.

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Section: Temperaturementioning

confidence: 99%

Climate Change and Childhood Respiratory Health: A Call to Action for Paediatricians

Cicco

Ferrante

Amato

et al. 2020

IJERPH

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“…The Speraman's correlation analysis examined positive associations with DTR, air pressure, absolute humidity and rainfall with air pollutants concentration, whereas the study demonstrated negative association of wind Speed, daily mean temperature and relative humidity with COVID-19 infected cases (Lee et al, 2019;Xie et al, 2016;Zhen et al, 2017). Some previous studies have reported that the mortality rate due to respiratory diseases increased with low temperature (Lin et al, 2013;Wang et al, 2007).…”

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confidence: 93%

Significance between Air pollutants, Meteorological Factors and COVID-19 Infections: Probable Evidences in India

Sahoo

2020

Preprint

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SARS-CoV-2 (Coronavirus) disease represents the causative agent with a potentially fatal risk which is having great global human health concern. Earlier studies suggested that air pollutants and meteorological factors were considered as the risk factors for acute respiratory infection, which carries harmful pathogens and affects the immunity. The study intended to explore the correlation between air pollutants, meteorological factors and the daily reported infection cases caused by novel coronavirus in India. The daily positive infected cases, air pollution and meteorological factors in 288 districts were collected from January 30, 2020 to April 23, 2020 in India. Speraman’s correlation and generalised additive model were applied to investigate the correlations of four air pollutants (PM2.5, PM10, NO2 and SO2) and eight meteorological factors (Temp, DTR, RH, AH, AP, RF, WS and WD) with COVID-19 infected cases. The study indicated that a 10 µg/m3 increase during (Lag0-14) in PM2.5, PM10 and NO2 was resulted in 2.21% (95%CI: 1.13 to 3.29), 2.67% (95% CI: 0.33 to 5.01) and 4.56 (95% CI: 2.22 to 6.90) increase in daily counts of COVID 19 infected cases respectively. However, only 1 unit increase in meteorological factor levels in case of daily mean temperature and DTR during (Lag0-14) associated with 3.78% (95%CI: 1.81 to 5.75) and 1.82% (95% CI: -1.74 to 5.38) rise of COVID-19 infected cases respectively. In addition, SO2 and relative humidity were negatively associated with COVID-19 infected cases at Lag0-14 with decrease of 7.23% (95% CI: -10.99 to -3.47) and 1.11% (95% CI: -3.45 to 1.23) for SO2 and for relative humidity respectively. The study recommended that there is significant relationship between air pollutants and meteorological factors with COVID-19 infected cases, which substantially explain the effect of national lockdown and suggested positive implications for control and prevention of the spread of SARS-CoV-2 disease.

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“…pollen, fungal spore, dust mites) that are triggers of AR occurrence [15]. Moreover, sudden temperature change had adverse effects on respiratory and immune system such as decreased effectiveness of respiratory defenses and more inflammatory nasal responses [15], which will increase the likelihood of respiratory disease occurrence among children, as supported by previous studies demonstrating an association between temperature variability and childhood asthma and acute bronchitis [16,17]. It is thus possible that unstable weather, i.e., DTR and TCN, is a underlying risk factor of childhood AR occurrence.…”

Section: Introductionmentioning

confidence: 84%

“…Similarly, some previous studies also reported adverse effect of short-term temperature variability. For example, Xu and colleagues found the risk of childhood asthma increased above a DTR of 10°C [17,18] reported a 1.0% increase of childhood acute bronchitis cases per 1 C increment of DTR. The present study further revealed that temperature variability had adverse effects on childhood AR.…”

Section: Discussionmentioning

confidence: 99%

Impact of temperature variability on childhood allergic rhinitis in a subtropical city of China

Wang

Cheng

et al. 2020

BMC Public Health

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Background Many studies have shown an association of childhood respiratory diseases with short-term temperature variability such as diurnal temperature range (DTR) and temperature change between two neighboring days (TCN). However, the impact of temperature variability on allergic rhinitis (AR) has not been investigated so far. This study sought to evaluate the short-term effect of temperature variability (i.e., TCN and DTR) on AR, as well as to identify vulnerable subpopulations. Method We collected daily data on emergency room visits and outpatients for AR and weather variables in Hefei, China during 2014–2016. A distributed lag non-linear model that controlled for long-term trend and seasonality, mean temperature, relative humidity, day of week was used to fit the associations of AR with DTR and TCN. Stratified analyses by age, sex and occupation were also performed. Results During the study period, there were a total of 53,538 cases and the average values of DTR and TCN were 8.4 °C (range: 1.0 °C to 21.2 °C) and 0 °C (range: − 12.2 °C to 5.9 °C), respectively. While we did not observe an adverse effect of DTR on AR, TCN was significantly associated with increased risk of AR. Specifically, a large temperature drop between two adjacent days (3.8 °C, 5th percentile of TCN) has a delayed and short-lasting effect on AR, with the estimated relative risk of 1.02 (95% confidence interval: 1.01 to 1.04) at lag 12. Moreover, boys and children older than 15 years seemed to be more vulnerable to the effect of TCN. Conclusions This study provided evidence of an adverse effect of large temperature drops between two adjacent days on childhood AR. Attention paid to boys and older children may help prevent AR attacks.

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Effect of diurnal temperature range on the outpatient visits for acute bronchitis in children: a time-series study in Hefei, China

Cited by 24 publications

References 27 publications

Climate Change and Childhood Respiratory Health: A Call to Action for Paediatricians

Climate Change and Childhood Respiratory Health: A Call to Action for Paediatricians

Significance between Air pollutants, Meteorological Factors and COVID-19 Infections: Probable Evidences in India

Impact of temperature variability on childhood allergic rhinitis in a subtropical city of China

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