The use of masks has set certain standards by the ministry of health and the WHO, the world health organization, for both the user's own health and the protection of those around them.
1) The front part of the medical mask that includes the nose, mouth and chin should never be touched.
2) If touched accidentally, hands should be washed with water and normal soap for at least 20 seconds or rubbed with an alcohol-containing hand antiseptic.
3) If the medical mask gets dirty, moist or torn during use, it must be replaced with a new one.
4) Medical masks should never be used in common.