I have come down with a case of what a friend describes as man flu. It’s gender specific terminology. It’s the “flu” you have when you’ve got a cold that’s bad enough taking the day off work – and the male threshold for such a malady is apparently significantly lower than the female variety.
All the research suggests you’re better off staying home in these sorts of cases anyway – as is your employer.
The flu mask picture is from here – which also features a bunch of other nifty designs.