Whooping Cough!!!!

[Little Chicken]

I also read on one of the pages they don't have to be coughing to be contagious, I'll see if I can find it again.

ETA: Basically the info said that you can be infectious from the first sneeze (it can start with cold like symptoms), up to 21 days from the first cough or to day 5 of a ten day course of antibiotics.