I will repeat here what I said in the chat room:
1. I wouldn't be taking my gliders to work if I were you. You could have easily picked up your cold AT work, which means they were exposed to it the same time you were. SHOULD they be sick, then they won't show signs until it's late in the game. Gliders hide illness VERY well, and can die quickly shortly after YOU realize there's something wrong.
2. For the above mentioned reasons, you should NOT be handling your gliders when you're sick. Period.
3. It could be 'that time of month' for her. You never know.
Kepp a VERY close eye on her, and don't play with her while you're sick.