In the beginning I thought wearing a mask was best but as time went on we realised from speaking to surgeons that masks are to stop our contaminants getting out or in the case of the surgeon compromising a sterile environment. Masks can recycle the same contaminants in your breath. They can also restrict your breathing which is not good for people with other underlying conditions especially when used for a long period of time. When doctors wear a mask it is generally just for the duration of the appointment. They do not wear the same one all day. the WHO have decided to clarify their position yet again.