Face masks during outbreaks: Who, when, where and how to use them - PAHO/WHO | Pan American Health Organization
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Coronavirus: 'Deadly masks' claims debunked - BBC News
Double-Masking Offers More Protection Against The Coronavirus, CDC Says : Coronavirus Updates : NPR
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Masking at Pride is a necessary form of community care - Philadelphia Gay News
To block omicron, wear an N95 or other high-filtration mask : Shots - Health News : NPR
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4 good reasons you might still want to wear a mask. | Novant Health | Healthy Headlines
ASTM mask levels: How to pick face masks in healthcare settings
Disability advocates and physicians call for required masking in hospitals, health facilities | GBH
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COMMENTARY: Masks-for-all for COVID-19 not based on sound data | CIDRAP
Double masking can block 92% of infectious particles, CDC says | CNN
Effectiveness of Face Mask or Respirator Use in Indoor Public Settings for Prevention of SARS-CoV-2 Infection — California, February–December 2021 | MMWR
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Are cloth masks effective for Covid? Surgical masks vs. KN95 explained
LAC | DPH | Wear a Mask to protect yourself from COVID-19
