I have an egg who became sick last night from too many views. So, naturally, I fogged it and used one of my white dragons' Ward actions to keep it from dying. Come the next morning, the egg was dead. I know the ward only lasts for six hours, but I was under the assumption that the whole point of the action was a sort of failsafe to ensure a fogged, sick dragon didn't die and had plenty of time to heal its sickness. It hadn't been sick for very long when I fogged and warded it, so I'm unsure why it died. The page does, in fact, say that it died of sickness, so it wasn't by some other means.
Here is the dead egg, although I suppose it doesn't matter now past simply being proof of existence:
I actually already have a pyralspite of each variety, so I'm not too torn on the matter, but I wanted to ask about it in case it can happen again to an egg I really, really care about (such as one of the legendary dragons or so, due to their rarity and difficulty to obtain).