Nine-year-old Leo has been under the care of Sheffield Children’s Hospital all his life, after he had an infection when he ...

Pocket holes get a bad rap from time ... When you take off the mask, you'll still be standing in a room filled with irritating dust particles. Good ventilation is the only solution that makes a ...

In this study, we have shown that the dispersion distances of a low normalized concentration of exhaled air through the ComfortFull 2 mask exhalation diffuser increased from 0.65 to 0.85 m at a ...