Study on masks vs N95 respirators for health workers spurs concerns

Exploring the N95 and Surgical Mask Supply in U.S. Nursing Homes During COVID-19 - Yumeng Li, Fang Fang, Mengying He, 2021

How firms are manufacturing face masks to plug coronavirus shortages

Selecting N95 Respiratory Protection for Healthcare Workers - Transforming Outcomes

Wildly unprepared': survey of US nurses highlights coronavirus concerns, Coronavirus

The efficacy of medical masks and respirators against respiratory infection in healthcare workers - MacIntyre - 2017 - Influenza and Other Respiratory Viruses - Wiley Online Library

Two masks can be worse than one: N95 respirator failure caused by an overlying face mask, Infection Control & Hospital Epidemiology

Depleted national stockpile leaves Canada reliant on China for masks, gowns and other supplies during pandemic

No, Fauci didn't say face masks were a 'failure

Covid Delta Variant: U.S. Mask Makers Struggle Despite Virus Surge - Bloomberg

Faced with shortages, researchers combine heat and humidity to disinfect N95 masks

Efficacy of face masks and respirators in preventing upper respiratory tract bacterial colonization and co-infection in hospital healthcare workers - ScienceDirect

Coronavirus spurs health authorities to make more surgical face masks for hospital staff - ABC News