The reason it's not been recommended in the US is because it's not really part of our culture, and so we don't have a huge supply of them It's a part of Japane

The reason it's not been recommended in the US is because it's not really part of our culture, and so we don't have a huge supply of them It's a part of Japanese culture, and while they may have had a huge supply of them, there are mask shortages now. People there seem more upset about the price gougers than the mask shortage.