Diurnal temperature range and mortality in Tabriz (the northwest of Iran)

Sharafkhani, Rahim; Khanjani, Narges; Bakhtiari, Bahram; Jahani, Yunes; Tabrizi, Jafar Sadegh; Tabrizi, Fatemeh Moghaddam

doi:10.1016/j.uclim.2018.11.004

Cited by 24 publications

(18 citation statements)

References 33 publications

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“…Otherwise, the study conducted in 30 East Asian cities showed that increased DTR was associated with increased risk of mortality for respiratory and cardiovascular diseases (Kim et al, 2016). In the cold season, the cumulative relative risk of nonaccidental, respiratory and cardiovascular death increased at high DTR values in Tabriz (Sharafkhani et al, 2019). A time-series study conducted in Shanghai about the effect of DTR on daily chronic obstructive pulmonary disease (COPD) mortality showed that each 1°C elevation in the 4-day moving average for DTR accounted for 1.25% of increased risk of COPD mortality (Song et al, 2008).…”

Section: Discussionmentioning

confidence: 98%

“…DTR represents a stable measure of temperature, which is an indicator of temperature variability to evaluate effects on human health, including mortality and morbidity (Easterling et al, 1997). Also, abrupt temperature changes may add to the burden of cardiac and respiratory system causing cardiopulmonary events and high DTR levels may be a source of environmental stress (Sharafkhani et al, 2019). It is said that the windows of inpatient wards were asked to remain open for 24 h a day and avoid using air conditioning in Wuhan hospitals due to ventilation necessity, therefore the indoor variation trend of meteorological factors could be very close to the outdoor environment.…”

Section: Discussionmentioning

confidence: 99%

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Effects of temperature variation and humidity on the death of COVID-19 in Wuhan, China

Zhao

Liu

et al. 2020

Science of The Total Environment

797

762

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Generalized additive model was applied to explore the effect of temperature, humidity and diurnal temperature range on the daily death counts of COVID-19. There were 2299 COVID-19 death counts in Wuhan during the study period. A positive association with COVID-19 daily death counts was observed for diurnal temperature range (r = 0.44), but negative association for relative humidity (r = −0.32). In addition, one unit increase in diurnal temperature range was only associated with a 2.92% (95% CI: 0.61%, 5.28%) increase in COVID-19 deaths in lag 3. However, both 1 unit increase of temperature and absolute humidity were related to the decreased COVID-19 death in lag 3 and lag 5, with the greatest decrease both in lag 3 [−7.50% (95% CI:

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Effects of temperature variation and humidity on the death of COVID-19 in Wuhan, China

Zhao

Liu

et al. 2020

Science of The Total Environment

797

762

View full text Add to dashboard Cite

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“…Further studies found that the effects of both heat and cold could adversely affect respiratory disease (Li et al 2019) and that a rising diurnal temperature range risk was linked with a greater risk of cardiovascular disease in 30 eastern Asian cities (Kim et al 2016). The relative cumulative risk of cardiovascular, respiratory, and non-accidental, deaths, and cases in the winter season in Tabriz increased with a high diurnal temperature range (DTR) (Sharafkhani et al 2019). In a series of times in the Shanghai region, the effect of diurnal tempering ranges on the daily mortality of obstructive pulmonary disease (COPD) was reported, showing that every 1°C rise in diurnal temperature ranges represented 1.25% of the risks for COPD cases (Song et al 2008).…”

Section: Discussionmentioning

confidence: 99%

“…A study of immune functions and cold exposure indicated that immune function could suppress by lower temperatures (Shephard and Shek 1998). In addition, sudden changes in temperature can impose additional pressures on the respiratory and cardiac system that cause cardiopulmonary problems, and high diurnal temperature range can contribute to environmental stress (Sharafkhani et al 2019). Its increasing negative impact on human health, disease, the risk may significantly influence the intensity of COVID-19 transmission in the sub-arctic region of Russia.…”

Section: Discussionmentioning

confidence: 99%

Climatic factors influence the spread of COVID-19 in Russia

Pramanik

Udmale

Bisht

et al. 2020

International Journal of Environmental Health Research

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The study is the first attempt to assess the role of climatic predictors in the rise of COVID-19 intensity in the Russian climatic region. The study used the Random Forest algorithm to understand the underlying associations and monthly scenarios. The results show that temperature seasonality (29.2 ± 0.9%) has the highest contribution for COVID-19 transmission in the humid continental region. In comparison, the diurnal temperature range (26.8 ± 0.4%) and temperature seasonality (14.6 ± 0.8%) had the highest impacts in the sub-arctic region. Our results also show that September and October have favorable climatic conditions for the COVID-19 spread in the sub-arctic and humid continental regions, respectively. From June to August, the high favorable zone for the spread of the disease will shift towards the sub-arctic region from the humid continental region. The study suggests that the government should implement strict measures for these months to prevent the second wave of COVID-19 outbreak in Russia.

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“…Moreover, a concluded report within 30 East Asian countries clarified that the higher the diurnal temperature range (DTR), the higher the mortality risk for pulmonary and cardiovascular affection present ( 71 ). In the cold atmosphere, the accumulative hazards of pulmonary and cardiovascular mortality grew with higher DTR rates ( 72 ). A time experiment conducted in Shanghai on the influence of DTR on chronic obstructive pulmonary disease (COPD) mortality clarified that, for every 1°C increase in the 4 days for DTR, COPD mortality increases by 1.25% ( 73 ).…”

Section: Factors Affecting the Spreading And Increased Of Mortality Omentioning

confidence: 99%

COVID-19 in Human, Animal, and Environment: A Review

et al. 2020

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The medical authority in China, especially in Wuhan city, reported on December 2019 a large number of highly fatal, rapidly spreading viral pneumonia caused by an unknown coronavirus. The common history of all the patients was their visiting a Wuhan's whole food store, where live animals and seafood are sold. Irrespective of the efforts of the Chinese authorities, the virus spread rapidly all over the world by travelers, provoking widespread attention by the media and panic. Many previous coronavirus epidemics had been recorded, such as severe acute respiratory syndrome (SARS) and Middle East respiratory syndrome (MERS), and the recently newly discovered epidemic is named coronavirus disease of 2019 (COVID-19). This disease is caused by SARS Coronavirus-2 (SARS-CoV-2), and this virus is antigenically related to the SARS virus (SARS-CoV), which had been detected in 2002, depending on clinical, serological, and molecular findings. There is rapid competition among the researchers to discover the source of the virus, understand the mechanism of the disease development, establish treatment strategies, and determine the factors affecting the incidence of infection and severity of the disease, and focus on the production of a vaccine. Coronaviruses are a group of single-stranded, positive-sense RNA genome viruses; its genome length varies from 26 to 32 kb. Coronavirus causes mild to severe respiratory disorders. In December 2019, several cases of pneumonia of unknown causes were found in Wuhan city, which is located in the Hubei province in China. Chinese health authorities investigated the problem and found that a new virus caused such infection and, using next-generation sequencing, found the 2019 novel coronavirus (2019-nCoV). It has been transferred from humans to humans and animals to humans (zoonotic). Coronaviruses cause multiple respiratory problems, varying from common cold to severe infections such as SARS. General symptoms of infection include fatigue, cough, and breathing problems such as shortness of breath, as described by World Health Organization. Serious cases may result in pneumonia, renal failure, and even death. We address current information about the new SARS Coronavirus-2 as well as the COVID-19 disease caused by it in this review.

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Diurnal temperature range and mortality in Tabriz (the northwest of Iran)

Cited by 24 publications

References 33 publications

Effects of temperature variation and humidity on the death of COVID-19 in Wuhan, China

Effects of temperature variation and humidity on the death of COVID-19 in Wuhan, China

Climatic factors influence the spread of COVID-19 in Russia

COVID-19 in Human, Animal, and Environment: A Review

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