found this and more about masks...
Masks
Q. I’ve heard that face masks can help protect against coronavirus because they prevent you from touching your face. Is this true?
A. There is limited data to suggest that face masks can help protect against the coronavirus because they prevent you from touching your face.
Physical barriers, such as surgical or cloth masks, are not a “better than nothing” option for being out in public. “With surgical masks,” says Dr. Eli Perencevich, professor of internal medicine and epidemiology at the University of Iowa’s College of Medicine, “people don’t wear them correctly.” Perencevich notes that people “drop it below their nose, or drop it below when [they] eat. And then you’re just contaminating your face.”
Surgical masks are designed to be single-use. For those not used to wearing these or disposing of them properly, there is a big risk of auto-contamination (you touch an infected surface, and then touch the front of your mask, leaving only a thin barrier between your mouth and nose and the virus). In the event that you have some of these already and you share a home with someone, we recommend you hold onto them, should anyone in your household become infected. They’re intended to protect the healthy from the sick.
—Christina Colizza, research editor
Q. I am sick or caring for a sick person, but I can’t find surgical or respirator masks anywhere. Are there DIY options? What should I be doing to protect the people who live with me?
A. First things first: Unless you’re sick and hoping to not infect others,
you don’t need a face mask. An N95 respirator could protect you from a respiratory virus if worn correctly, but as you’ve stated,
they’re out of stock. Surgical masks provide at best a latex barrier and at worst a false sense of security that could lead to your getting infected. The best
things you can do as a caretaker are to isolate the sick person, practice good hand hygiene, and keep your distance when possible.
According to
Dr. Saskia Popescu, a hospital epidemiologist and infection preventionist, a surgical mask, or a makeshift mask like a bandana, won’t be all that useful for a caretaker, because they tend to offer a false sense of security that can result in auto-contamination. “What I see often is people using makeshift masks and they don’t need to be wearing them, and then not washing their hands and touching their eyes all the time and then their mouth,” says Popescu. Also, people will often take off these masks, surgical or DIY, from the front, rather than by the strings, and then improperly dispose of them.
—Christina Colizza, research editor
Q. What about cloth masks, like these ones available on Amazon? Are these a good thing to wear since all the surgical masks and N95s are gone?
A: If you’re confused about masks, you’re not alone. There’s been a ton of conflicting information published by federal agencies, major public health institutions, individual experts, and news outlets over the past few weeks. On top of that, the term “mask” has been used as a catch-all for vastly different things: surgical masks,
NIOSH-approved N95 respirators, reusable cloth masks, and even ski masks, balaclavas, or DIY barriers. Reusable cloth options function similarly to surgical masks: They do not form an airtight seal and are of limited help to protect a healthy person from contracting a respiratory virus.
The US surgeon general and epidemiologists sent a
somewhat garbled message indicating that people did not need to buy or wear surgical masks or N95 masks because a) healthcare workers
need them more than everyday citizens do, and b) people without highly specialized training on mask use might contaminate themselves or not dispose of masks properly. On March 10, the CDC changed its guidance for healthcare professionals to say that surgical masks offer an “acceptable alternative” to N95 respirator masks when treating patients with known or suspected coronavirus. (The American Nurses Association quickly responded with a
letter to Congress suggesting that the CDC’s decision was based on scarcity, not science.) Later, other epidemiologists published op-eds arguing that masks are good, and
that everyday people should wear them, not only if they are sick and hoping to reduce the spread of their own germs to others.
The inherent issue is that many people who have or will develop COVID-19 are asymptomatic. Those unknowingly sick people could be spreading the virus. Thus, shouldn’t everyone be wearing masks, just in case?
There is not yet a clear answer. The one thing we do know for sure: Healthcare workers are facing a
critical shortage of personal protective equipment, including surgical and N95 masks.
—Christina Colizza, research editor
Q. I’ve heard that other countries recommend using face masks far more readily than the US Centers for Disease Control and Prevention does. Is this true?
A. The World Health Organization represents 194 different countries from six different regions and offers the same guidelines for mask usage that CDC offers here in the US.
Those guidelines are:
- Wear a mask if you are coughing and sneezing.
- If you are healthy and not a member of the medical profession, you need to wear a mask only if you are caring for someone who is sick.
- Masks are effective only when used with proper hand-cleaning.
- Effective use of face masks requires the wearer to follow proper use and disposal procedures.