Cloth Face Masks and Their Effectiveness

What was one of the reasons for the increased use of cloth face masks during the COVID-19 pandemic?

• They were more effective than N95 masks.

• They were a cheaper alternative to surgical masks.

• They were available in various fashionable designs.

• They were mandated by all governments worldwide.

Why are cloth face masks still considered necessary in some settings despite the availability of vaccines?

• They are required by law in all public places.

• They can help prevent the spread of potential vaccine-resistant variants.

• They are the only masks that can block SARS-CoV-2.

• They are more comfortable than other masks.

What is the primary way cloth masks help prevent the spread of COVID-19?

• By being worn in combination with face shields.

• By providing a chemical barrier.

• By filtering out the virus itself.

• By blocking larger respiratory droplets.

Which fabric combination was found to be most effective in blocking droplets?

• A single layer of cotton.

• A hydrophilic inner layer, absorbent middle layer, and hydrophobic outer layer.

• Two layers of polyester.

• A single layer of nylon.

How did machine washing affect the performance of masks made from cotton or polyester?

• It made them unusable.

• It slightly improved their performance.

• It had no impact on their performance.

• It significantly reduced their effectiveness.