Is it time to upgrade your mask? These are considered the best protection against COVID

With health agencies renewing guidance in light of the highly contagious omicron variant of the coronavirus, it may be time to upgrade your mask.

The latest word from the U.S. Centers for Disease Control and Prevention is masks that fit well protect against all variants, but respirators — N95s and KN95s — offer the most protection.

Monday, Kentucky Gov. Andy Beshear reported new COVID-19 cases are “significantly if not rapidly declining” across the commonwealth as the omicron surge gives signs of slowing. But the number of residents seeking vaccinations is also declining, he noted.

Here’s a roundup of what you should know about mask effectiveness, tips for finding the right mask and how to spot counterfeit N95s and KN95s.

How effective are masks?

The CDC continues to recommend mask-wearing in community settings to “reduce the emission of virus-laden droplets by the wearer.” Yes, that means you’re wearing it for others.

Masking is an important step to reduce the spread of the coronavirus from asymptomatic and presymptomatic infected individuals, who are estimated to account for more than half of transmissions. The federal agency cites a number of studies on mask wearing, including a nationwide data analysis showing counties without school mask requirements experienced larger increases in COVID-19 cases in children after the start of the school year compared to counties that required masking.

The World Health Organization concurs, saying masks should be used as part of a comprehensive strategy that also includes well-ventilated indoor settings, physical distancing and hand washing.

What type of mask should I wear?

Many health officials and organizations have updated guidance in recent weeks to recommend the public use higher-quality, respirator masks for the most protection.

In a report shared by the CDC Feb. 4, a study among individuals who reported always wearing a mask in indoor, public settings found respirators with higher filtration capacity afforded the most protection. The adjusted odds of testing positive while wearing an N95 or KN95 were lowered by 83%, the study found. For surgical masks, that figure was 66%.

Here’s what to look for in an N95 and KN95, per the CDC:

• Look for models that bear the National Institute for Occupational Safety and Health approval logo.
• Find one that fits comfortably, yet securely. A proper fit should be tight to your face so as to not allow particles to escape. Selecting masks with nose wires, using mask fitters and knotting the ear loops can all help masks fit more securely.
• Don’t buy KN95s or N95s with valves — they allow particles that could include the virus to escape.
• Don’t purchase masks labeled surgical N95/KN95. These are for healthcare workers.

If you opt for a surgical mask (also called medical procedure and disposable masks), here’s what to look for:

• Make sure you purchase multi-layered procedure masks made of non-woven material.
• Look for masks with a metal nose wire for a better fit.
• Consider layering a procedure mask under a cloth mask for more protection. Don’t layer two procedure masks, the CDC recommends.

If opting for a cloth mask, the CDC suggests you:

• Look for ones with multiple layers of tightly-woven, yet breathable fabric.
• Hold the mask to a bright light source to ensure that it blocks light.
• Avoid cloth masks that fit poorly.
• Consider layering your cloth mask on top of a procedure mask.

Where can I find N95s and other quality masks?

Stock at retailers can ebb and flow, so those able to purchase online can use resources like Wirecutter’s buying guide to find reputable options.

The nonprofit Project 95 also has an online storefront to purchase masks and other protective equipment. They also have suggestions if you’re purchasing masks for children.

You can also find a CDC list of NIOSH-approved N95 respirator manufacturers here.

How do I know if an N95/KN95 mask is counterfeit or not?

If you’re on the hunt for a NIOSH-approved respirator, the CDC has these tips to identify counterfeits:

• A lack of markings on the filtering facepiece.
• No approval TC number on facepiece or headband.
• No NIOSH marking.
• NIOSH spelled incorrectly.
• Decorative elements, like add-ons and sequins.
• Children’s masks advertised as NIOSH-approved. The agency does not approve respiratory protection for children.
• Facepieces with ear loops in place of headband straps.