I have been hard at work trying to unlock the Laboratory Outbreak Achievement. However, I cannot unlock it. I followed all of the steps and I have a hospital with a diagnostic lab that is NOT in sandbox mode and I also have 15+ deaths per day. I have no clue what I am doing wrong, but I was, ironically, able to unlock the earthquake disaster in the exact same game by using an ore mine.
Please help and thanks!
I think the 15 deaths have to be caused by a disease to get it. Pump some dirty water into your city and turn off the hospital for a while until you got a lot of sick people and a lot of deaths, then turn the hospital back on.
That's how I got it.