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2. Usage of personal protective equipment - Wikipedia

   en.wikipedia.org/wiki/Usage_of_personal...

   A gas mask is worn over the face to protect the wearer from inhaling "airborne pollutants" and toxic gases. The mask forms a sealed cover over the nose and mouth, but may also cover the eyes and other vulnerable soft tissues of the face. Airborne toxic materials may be gaseous or particulate. Many gas masks include protection from both types.

3. Surgical mask - Wikipedia

   en.wikipedia.org/wiki/Surgical_mask

   A surgical mask serves as a mechanical barrier that interferes with direct airflow in and out of respiratory orifices (i.e. nose and mouth).Most commonly used surgical masks are designed to only trap respiratory droplets, and therefore do not filter or block fine airborne particles that are smaller than the designed filtration ratings, which may be transmitted by coughs, sneezes, unintentional ...

4. Breathing mask - Wikipedia

   en.wikipedia.org/wiki/Breathing_mask

   Non-rebreather mask, an oro-nasal mask used in medicine to assist in the delivery of oxygen therapy; Oxygen mask, which covers the mouth and nose of a patient undergoing oxygen therapy as first aid or longer-term treatment, or a passenger in an aircraft which has depressurised at altitude; Continuous positive airway pressure mask; Anesthetic mask

5. Face masks again required for patients, visitors, staff at ...

   www.aol.com/face-masks-again-required-patients...

   The updated policy, which includes all UPMC facilities across the Pittsburgh-based health system, goes into effect Wednesday.

6. COVID-19 is 'heating up all around' this summer. Should ... - AOL

   www.aol.com/news/covid-19-heating-around-summer...

   Healthcare workers in L.A. County are still required to wear masks when providing care or working with patients and clients. Staying up to date on vaccinations is also an important factor in ...

7. Should we wear masks again? Covid guidelines experts ... - AOL

   www.aol.com/wear-masks-again-covid-guidelines...

   Dr Cody said that wearing masks even only in a high-risk environment is better than nothing at all “because the more people are together, the greater the chance that one of those people is going ...