Background Since the 2003 severe acute respiratory syndrome epidemic, scientific
exploration of infection control is no longer restricted to microbiologists or medical scientists …

Knowing the physicochemical properties of exhaled droplets and aerosol particles is a
prerequisite for a detailed mechanistic understanding and effective prevention of the …

Breath tests cover the fraction of nitric oxide in expired gas (F ENO), volatile organic
compounds (VOCs), variables in exhaled breath condensate (EBC) and other …

Background Originally, studies on exhaled droplets explored properties of airborne
transmission of infectious diseases. More recently, the interest focuses on properties of …

Inflammation, structural, and functional abnormalities within the airways are key features of
asthma. Although these processes are well documented, their expression varies across the …

The technique of sampling exhaled air is attractive because it is noninvasive and so allows
repeated sampling with ease and no risk for the patient. Knowledge of the biomarkers' origin …

Whether virulent human pathogenic coronaviruses (SARS-CoV, MERS-CoV, SARS-CoV-2)
are effectively transmitted by aerosols remains contentious. Transmission modes of the …

The chemical composition of respiratory particles is of interest because the viability of any
viruses and bacteria in the particles has been shown to depend on this factor. Using …

Human breath, along with urine and blood, has long been one of the three major biological
media for assessing human health and environmental exposure. In fact, the detection of …

This study investigates the number size distribution of endogenously produced exhaled
particles during tidal breathing and breathing with airway closure. This is the first time that …