The relationship between indoor airborne culturable bacteria with passenger flow in 132 traffic stations during 2019-2020, China.

This study aims to provide technical support for the development of a rational administration strategy for indoor environment and passenger flow of stations. The analysis was conducted monitor data of long distance bus stations and train/high speed railway stations from the National project. The monitor and surveyed data included indoor airborne culturable bacteria (IAB), passenger flow, area and height of stations.

Association between heatwaves and risk and economic burden of injury related hospitalizations in China.

Background: Public health is greatly affected by heatwaves, especially as a result of climate change. It is unclear whether heatwaves affect injury hospitalization, especially as developing countries facing the impact of climate change.

Objectives: To assess the impact of heatwaves on injury-related hospitalization and the economic burden.

Indoor air quality of urban public transportation stations in China: Based on air quality evaluation indexes.

Indoor air quality (IAQ) of urban public transportation stations (UPTS) has adverse health impacts on the station employees and commuters. However, there is a lack of comprehensively evaluations of IAQ in waiting rooms of UPTS. Therefore, it is crucial to select appropriate air quality indexes (including fuzzy synthetic index (B), comprehensive index (P), I index, and indoor air quality index (IAQI)) to assess air quality and potential health risks.

Levels, distribution, childhood exposure assessment, and influencing factors of polybrominated diphenyl ethers (PBDEs) in household dust from nine cities in China.

Household dust is an important source of premature exposure to polybrominated diphenyl ethers (PBDEs), especially for children. In this onsite study, 246 dust samples were collected from 224 households in nine Chinese cities during 2018-2019. Questionnaires were administered to explore the association between household-related information and PBDEs in household dust.

Declines in Blood Lead Levels Among General Population - China, 2000-2018.

What Is Already Known About This Topic?: Environmental and occupational lead exposure has generally declined in the past two decades. However, there is no large-scale monitoring of blood lead levels (BLLs) in the Chinese general population.

What Is Added By This Report?: This nationally representative study showed declines of BLLs in all ages of participants; for children aged 3-5 years, down from 78.

Levels, distribution, sources and children health risk of PAHs in residential dust: A multi-city study in China.

Background: Polycyclic aromatic hydrocarbons (PAHs) are typical residential pollutants mainly from biofuel combustion that impose inevitable risk to children. The PAHs in residential dust is universal in most Chinese households with an obvious public health concern.

Methods: In this observational study, a total of 235 residential dust samples from 8 Chinese cities (Panjin, Shijiazhuang, Lanzhou, Luoyang, Xi'an, Wuxi, Mianyang, and Shenzhen) were collected from April 2018 to March 2019, which were extracted and analyzed for 16 priority PAHs by HPLC/FD-UV.

Knowledge, Attitude, Risk Perception, and Health-Related Adaptive Behavior of Primary School Children towards Climate Change: A Cross-Sectional Study in China.

Background: Children are disproportionately affected by climate change while evidence regarding their adaptive behavior and relevant influencing factors is limited.

Objectives: We attempted to investigate health-related adaptive behavior towards climate change for primary school children in China and explore potential influencing factors.

Methods: We conducted a survey of 8322 primary school children in 12 cities across China.

Association of indoor noise level with depression in hotel workers: A multicenter study from 111 China's cities.

Several studies have elucidated the link between outdoor noise and depression, but the relationship between indoor noise levels and depression symptoms in residential and public places remains unclear. This study was a multicenter observational study with a cross-sectional design. In 2019, a total of 10 545 indoor noise levels on-site and 26 018 health data from practitioners were collected from 2402 hotels in 111 cities.

Heat and outpatient visits of skin diseases - A multisite analysis in China, 2014-2018.

Background: Many studies have shown that various kinds of diseases were associated with the variation of ambient temperature. However, there's only a scrap of evidence paying attention to the link between temperature and skin diseases, and no relevant national research was performed in China.

Objective: This study aimed to quantify the effect of heat on skin diseases and identify the vulnerable populations and areas in China.

Heatwave and urinary hospital admissions in China: Disease burden and associated economic loss, 2014 to 2019.

Background: Many studies have shown that heatwaves are associated with an increased prevalence of urinary diseases. However, few national studies have been undertaken in China, and none have considered the associated economic losses. Such information would be useful for health authorities and medical service providers to improve their policy-making and medical resource allocation decisions.

Temperature and influenza transmission: Risk assessment and attributable burden estimation among 30 cities in China.

Background: Many studies have explored the epidemiological characteristics of influenza. However, most previous studies were conducted in a specific region without a national picture which is important to develop targeted strategies and measures on influenza control and prevention.

Objectives: To explore the association between ambient temperature and incidence of influenza, to estimate the attributable risk from temperature in 30 Chinese cities with different climatic characteristics for a national picture, and to identify the vulnerable populations for national preventative policy development.

The relationship of residential formaldehyde pollution in 11 Chinese cities to schoolchildren pneumonia prevalence in actual living condition.

Residential formaldehyde pollution is one of the leading residential harmful pollutants with a large production and consumption globally and remains much uncertainty in Chinese families with huge health burden for children worldwide. A multi-center observation study from 11 cities was conducted to investigate residential formaldehyde pollution levels measured by phenol reagent spectrophotometry. Data on household characteristics and schoolchildren's health were collected by questionnaire.

Seasonal variation in association between temperature change and emergency department visits: A multi-site study in China.

Background: There is limited evidence of effects and seasonal variation of temperature change on emergency department visits (EDVs).

Objective: To investigate the association between diurnal temperature range (DTR), temperature change between neighboring days (TCN) and a comprehensive collection of cause-specific EDVs in China.

Methods: We collected EDVs, weather, and air pollution data in 20 sites in China from 2014 to 2018.

Independent and Interactive Effects of Environmental Conditions on Aerosolized Surrogate SARS-CoV-2 - Beijing, China, June to September 2020.

What Is Already Known About This Topic?: Environmental factors such as temperature and humidity play important roles in the transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) via droplets/aerosols.

What Is Added By This Report?: Higher relative humidity (61%-80%), longer spreading time (120 min), and greater dispersal distance (1 m) significantly reduced SARS-CoV-2 pseudovirus loads. There was an interaction effect between relative humidity and spreading time.

Levels, distributions and influential factors of residential airborne culturable bacteria in 12 Chinese cities: Multicenter on-site survey among dwellings.

Residential airborne culturable bacteria (RAB) are commonly used to assess indoor microbial loads, which is a very effective and recognized indicator of public concern about residential air quality. Many countries and organizations have set exposure limits for residential bacteria. Nevertheless, few studies have been conducted in multicenter cities about the distribution and influencing factors of RAB.

Effects of Cold Spells on Mortality - Ningbo City, Zhejiang Province, China, 2014-2018.

What Is Already Known About This Topic?: In recent years, climate change may lead to an increase in cold spells in the middle latitudes, and there is a positive correlation between cold spells and population mortality.

What Is Added By This Report?: The acute response period and the vulnerable population were identified under the optimal definition of cold spells, and the mortality burden caused by cold spells was estimated.

What Are The Implications For Public Health Practice?: This research would provide evidence on the acute mortality effects of cold spells in southern China.

Effectiveness Evaluation of a Primary School-Based Intervention against Heatwaves in China.

Background: Evidence of the effectiveness of intervention against extreme heat remains unclear, especially among children, one of the vulnerable populations. This study aimed to evaluate the effectiveness of a primary school-based intervention program against heatwave and climate change in China to provide evidence for development of policies for adaptation to climate change.

Methods: Two primary schools in Dongtai City, Jiangsu Province, China, were randomly selected as intervention and control schools (CTR registration number: ChiCTR2200056005).

PKG II secreted via the classical endoplasmic reticulum-Golgi apparatus secretory pathway blocks the activation of EGFR through phosporalting its threonine 406 and has an anti-tumor effect.

Background: Protein kinase G type II (PKG II) is a serine/threonine-protein kinase that was originally isolated from the small intestinal mucosa with primary functions in the secretion of small intestinal mucosal cells, secretion of renin and aldosterone, and chondrocyte activities. Recent studies have shown that PKG II exerts anti-tumor effects, while a previous study by our group confirmed that PKG II inhibited the proliferation and migration of cancer cells. Interestingly, PKG II, which was typically bound to the intracellular side of the membrane, was detected in the serum and cell culture medium as a diagnostic biomarker of tumor growth.

Characteristics, distribution, and children exposure assessment of 13 metals in household dust in China: A big data pilot study.

To explore the pollution characteristics of metals in household dust in China and their exposure to children, this study searched peer-reviewed papers published during 1980-2020 and analyzed 30 eligible papers screened under the per-decided strategy. We evaluated the sample-weighted concentration (SWC) of each metal, explored the sources of metals, and presented the quantitative description of spatial-temporary characteristics and children exposure to 13 metals with multi-route under a general living scenario. The results showed the concentrations of 13 metals with a range of 0.

Assessment of Regional Health Vulnerability to Extreme Heat - China, 2019.

The health risk caused by high-temperatures depends on the interaction between high temperature exposure and the sensitivity and adaptability of the affected populations. A comprehensive assessment model was established by principal component analysis using the data of 19 cities, 15 provincial-level administrative divisions and used to identify regional characteristics and major influencing factors of health vulnerability to extreme heat in China. The results of the health vulnerability assessment could effectively identify the regions highly vulnerable to extreme heat in China and provide scientific evidence for the development of adaptive measures and resource allocation plans.

Indoor air quality in the primary school of China-results from CIEHS 2018 study.

Indoor air quality ((IAQ) in classrooms was associated with the daily exposure of school-age children who are particularly vulnerable to air pollutants exposure, while few data exist to evaluate classroom indoor air quality nationwide in China. The subsample of the CIEHS 2018 study was performed in 66 classrooms of 22 primary schools nationwide in China. Temperature, relative humidity, PM PM, CO, CO, formaldehyde concentrations, bacteria and fungi were detected in all classrooms by using the instruments that meet the specified accuracy.

The mortality burden of nervous system diseases attributed to ambient temperature: A multi-city study in China.

Backgrounds: Studies on the association between ambient temperature and human mortality have been widely reported, focusing on common diseases such as cardiopulmonary diseases. However, multi-city studies on the association between both high and low temperatures and mortality of nervous system diseases were scarce, especially on the evidence of vulnerable populations.

Methods: Weekly meteorological data, air pollution data and mortality data of nervous system were collected in 5 cities in China.

Spatiotemporal variation in residential PM2.5 and PM10 concentrations in China: National on-site survey.

Background: Significant efforts have been directed toward addressing the adverse health effects of particulate matter, while few data exist to evaluate indoor exposure nationwide in China.

Objectives: This study aimed to investigate dwellings particulate matter levels in the twelve cities in China and provide large data support for policymakers to accelerate the legislative process.

Methods: The current study was based on the CIEHS 2018 study and conducted in 12 cities of China.

Residential airborne culturable fungi under general living scenario: On-site investigation in 12 typical cities, China.

Background: Residential airborne fungi may present obvious risk to human health. However, many countries do not recognize the necessarily need to control residential airborne culturable fungi (RAF). In China, few systemic investigations have been conducted to illustrate the distribution of residential airborne fungi and identify the association between indoor influencing variables and RAF under general living scenario in China.