the time to wear masks is in a large public setting we don't know the people there and there might be people there that are more at risk. >> sandra: i know a lot of people have asked me about this, if you do decide to have a large gathering, of vaccinated individuals, but you are still concerned about the spread, do these air filters, do you recommend these air filters that you can buy on amazon and he put in a room while you're having a 13 person gathering? >> dr. siegel: i do. the filters. they are expensive unfortunately. that's we see on planes. they are 95% effective at getting viruses out of there. it is a nice additional feature. >> sandra: there is a lot of research out there on them because they do vary in price. so i, sprung it on you. great interview. thank you. great information. john. stony can see on foxnews.com, by the way. sorry for the technical mixup. through and let's bring in brett giroir. admiral giroir, when we look at