Everyone has given really great advice so as far as that goes it's all been said. But as for them all being ill suddenly ... some probably are trying to get out of work OR are a bit hypochondriac and hear others are sick and feel they are too (hmm, most of us can probably relate) and some are probably legitimately not well ... that said since you all work together it is possible that they all ate the same thing at lunch/went out together and its food related. Or even if it is a sv just do as has been mentioned and you should be just fine. Edited by: SimplyMe