BMJ Group Sep 17 2025 A lack of soap is the most often reported barrier to effective hand hygiene-key to curbing the spread of infection-in shared community spaces, such as households, schools, and public places, finds a systematic review of the available research, published in the open access journal  BMJ Global Health. It found that the barriers most often reported concerned physical opportunity, such as the availability of soap; and lack of motivation-hand hygiene not prioritised, or not