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66% of the population is fully vaccinated. given we have vaccines and treatments like you described, with this surge, are mitigation measures necessary or is it safe to just kind of let it run its course? >> it depends your risks. if you are a 30-year-old, 40-year-old person otherwise healthy who has been vaccinated and boosted, you may be able to take a lot more risky activities and do more risky stuff than if you're an 80-year-old who hasn't been boosted. i think it's going to be varying depending on what the individual risk is. the reality is that we're unlikely going to be seeing msk manda...

Health experts agree that masking is the key to preventing the spread of the coronavirus along with vaccines and social distancing. which masks do a better job? cnn's brian todd has the story. >> reporter: we have, wolf. it's led to serious confusion. even with the new guidance the cdc's director says their recommendation that wearing any mask is better than wearing no mask at all. we have new information on viewers on what the government is going to say on this. tonight a new effort to stem confusion about mask wearing during the pandemic. the cdc expected to update the guidance soon. the cdc...

Delivering here later today, as well. >> mike, thank you so much. and turning back to the coronavirus pandemic. we've been hearing from doctors it's time to upgrade your masks, but masks are not one-size-fits all. different people have different needs and different budgets. back with me is msnbc medical contributor dr. vitamin gupta. thank you so much for being with us. i had a ton of questions after your segment. everyone was appreciative but they want more information. let us dive in. there are folks out there asking if it'll help to do double masking, if you can't get an n-95. >> so, katy...

Quality masks available for free. we need more details on this, but how important is this? >> well, i think it's very important. you know, we've been talk about this for a long time. people should wear masks and if you're going to wear a mask, which you should, it should be the most protective mas that can you can. we've showed this before, but if you look at in the context of omicron now, given how transmissible this is, a cloth mask versus a surgical mask versus an n-95 mask, it's skrr clear. i don't think anyone disputes the fact that the n-95 mask will be the most protected here, 1% to 10%...

Wear an n 95 or kn 95 more than once? >> yes. you can wear it a rule of thumb is up to 40 hours of use. the filter does not go bad for days to weeks. >> experts now say with omicron, it's high time to upgrade from cloth. >> cloth masks are little more than facial deck core races. >> some say there's been way to be that we ourselves, the front line workers, other influential people have actually curated on what works and what doesn't work based on evidence. >> n 95 and kn 95s are not cheap. they've averaged between 80 cents and $2 apiece.