If your intention is to figure out whether there are any patterns going on, like unusually high mortality in certain breeds/dates, then you have to ALSO ask about people who've gotten McM chicks that are NOT SICK and have done well. Otherwise you cannot figure out whether there is anything unusual going on.
i am really getting worried about my chicks...mine are due to come on march 10th...so i looked on the weather channel website and it only showed up until march 7th....on march seventh there is supposed to be a snow storm:/