The confluence of all three of these. if someone gets the flu and a week or two later gets covid, does that make their case of covid more severe? well, it s a really good question. we have seen covmbined infections. obviously flu can really knock you down. if you re recovering from the flu and get another infection, it certainly makes it much, much harder. absolutely. the key here is to try to avoid these things. look, these vaccines are terrific. they re not 100% from getting infected but will keep you from getting seriously ill. so you re not seeing a lot of cases where people are having that combination? not yet. not yet. i m hopeful that we will not. it can happen. we ve seep it with other viruses where you can get co-infection but we re obviously hopeful that s not going to become a major problem. a big concern. ....