masks also can be expensive. >> well, you know, absolutely sure, but you want to wear a high quality mask and that may be, you know, a multilayer mask, but it also needs to be one that fits your face well. if it doesn't fit your face well, if there's a lot of gaps there, it's higher risk. if it's just one piece of cloth it's not sufficient. so you really need a multilayer. if you use a cloth mask make sure it's multilayer. you can use a surgical mask, you can use an n95 mask, they are much more expensive, sometimes they are not as easy to use, but depends on the circumstance. you need to wear a high-quality mask. masking i think the good thing is we're beginning to see that there are different kinds of masks, different protections of masks and i think it will be up to the individual to think what's the best mask to protect myself. if i'm a i'm mub know suppressed patient i may want to wear a different mask than if i'm a young individual who probably has very little risk of progressing if they get infected. >> doing that individual risk assessment it sounds like.