Wildfire smoke is an increasing environmental health threat to which children are particularly
vulnerable, for both physiologic and behavioral reasons. To address the need for improved …

Providing the greater public with the current coronavirus (SARS-CoV-2) vaccines is time-
consuming and research-intensive; intermediately, some essential ways to reduce the …

The COVID-19 pandemic triggered a surge in demand for facemasks to protect against
disease transmission. In response to shortages, many public health authorities have …

We evaluated the effectiveness of 11 face coverings for material filtration efficiency, inward
protection efficiency on a manikin, and outward protection efficiency on a manikin. At the …

Objectives Many residents in Beijing use disposable face masks in an attempt to protect their
health from high particulate matter (PM) concentrations. Retail masks may be certified to …

The recent outbreak of the coronavirus disease (COVID-19) is causing a shortage of
personal protective equipment (PPE) in different countries around the world. Because the …

Volcanic air pollution from both explosive and effusive activity can affect large populations
as far as thousands of kilometers away from the source, for days to decades or even …

Background Low-cost face masks made from different cloth materials are very common in
developing countries. The cloth masks (CM) are usually double layered with stretchable ear …

Unhealthy levels of air pollution are breathed by billions of people worldwide, and air
pollution is the leading environmental cause of death and disability globally. Efforts to …

Background The reliability of N95 filtering facepiece respirators (FFRs) depends on correct
fitting. The perceived usability of FFRs is equally important because discomfort during usage …