Background: The acceptable fine particulate matter (PM 2.5) level in Thailand is double the
recommendation of the World Health Organization. It is necessary to have an accurate …

Asthma is a common chronic inflammatory disorder that is more prevalent in children than in
adults. China has seen an increasing prevalence of childhood asthma in recent decades [1] …

Background Particulate matter with diameter less than 10 micrometers (PM 10) that
originates from anthropogenic activities and natural sources may settle in the bronchi and …

Background Ambient PM2. 5 is associated with asthma exacerbation. The association
between the concentration of PM2. 5 and the severity of asthma exacerbation has yet to be …

Recent epidemiological studies pointed out that air pollution has a significant impact on
pediatric asthma. Shanghai is one of the biggest cities in China, and the short-term effect of …

Recent studies have revealed the influence of fine particulate matter (PM2. 5) on increased
medication use, hospital admission, and emergency room visits for asthma attack in …

Background and objectives Little is known about PM 1 effects on respiratory health, relative
to larger size fractions (PM 2.5). To address this literature gap, we assessed associations …

Although the relationship between asthma and exposure to fine particulate matter (PM2. 5)
has been frequently measured, reported conclusions have not been consistent. As …

Data on fine particulate matter (PM 2.5) in China were first announced in 2013. The primary
objective of this study was to evaluate the acute effects of PM 2.5 on asthma morbidity in …

Background The short-term effects of particulate matter (PM) exposure on childhood asthma
exacerbation and disease control rate is not thoroughly assessed in Chinese population yet …