Sounds reasonable. I've been debating whether to get the combo just in case I need it. I guess the earlier you take it, the better, but I don't want to get tested for covid, so I would need to guess whether it's covid or regular flu. The loss of taste seems to be the only thing that makes covid appear different from flu. I don't think I've ever had the flu. I've had some odd viruses over the years, and bronchitis from a common cold, but no flu that I'm aware of.