CAT/OP/11 3. (b) Fabric overcoat or gown; (c) Safety goggles or face shield; (d) Gloves; (e) Cap; (f) Overshoes. Level 3: full personal protective equipment 28. The following measures are complementary to those listed in level 2 and are used by health-care staff only for aerosol-generating procedures: (a) Full romper; (b) Z87+ safety goggles; (c) Respirator. 29. The level selected will depend on the risk assessment made regarding the possibility of interacting with confirmed and/or suspected cases of COVID-19. All national preventive mechanism experts should learn to use personal protective equipment properly. K. Informing the authorities 30. The authorities may receive information regarding the procedures put in place by the national preventive mechanism to ensure the safety of all involved, with adequate time for them to come back and comment. A handout with the procedures put in place may be sent by email to each place of deprivation of liberty and to its counterparts upon request. The national preventive mechanism may wish to communicate to the authorities that it will comply with the WHO guidelines for preventing the spread of the virus responsible for COVID-19 at all times and as appropriate if additional, reasonable and timely requests are presented to it. These communications should not, in principle, prevent national preventive mechanisms from carrying out unannounced visits. IV. During the visit A. Protective measures 31. The visiting team should follow the current WHO guidance at all times during its visit and whenever it interacts with prison staff and persons deprived of liberty. This guidance is reflected in level 1 described above. Members of the visiting teams should: (a) Maintain a physical distance of 1.5 to 2 metres; (b) Wash their hands regularly and/or use sanitizing gel; (c) Use soap and water, together with personal towels, as the first option for hand hygiene within a place of deprivation of liberty, given the possibility that some disinfectants, such as those containing alcohol, may be misused or forbidden in some settings; (d) Use surgical masks to cover the mouth and nose at all times; (e) Remain aware at all times that the use of a mask alone is insufficient to provide an adequate level of protection and that other equally relevant measures should also be adopted. Using a mask may create a false sense of security that can lead to neglecting other essential measures such as hand hygiene practices. Furthermore, using a mask incorrectly may hamper its effectiveness in reducing the risk of transmission; (f) Practise respiratory etiquette, including covering the mouth and nose using a disposable handkerchief or the inside of an elbow when one coughs or sneezes; 5