What is a "surgical mask"?

A surgical mask is a loose-fitting, disposable face mask that covers the nose, mouth, and chin to protect the wearer and others from respiratory droplets in the air. These masks are commonly used in healthcare settings during surgery or other medical procedures to prevent the spread of infectious agents, as well as in public settings during outbreaks of infectious diseases such as the COVID-19 pandemic. Surgical masks are made from various materials, including polypropylene, and typically have three layers that include a filtration layer to trap particles. They are designed to be worn for a short period of time and should be disposed of after use to prevent contamination. Surgical masks are an important tool in reducing the transmission of respiratory infections and promoting public health.