Stay the fuck out of large population centers, large stores, and don't travel. The odds are in your favor if you stay out of it's path.
If you don't want house odds, stay out of the casino.
Not everyone will catch it, the transmission odds are about 2 in 5 in the wild. If you continually put yourself in the path, the odds drop each encounter.
The good news is that they have a cure for the infection that is caused by the virus, the bad news is if it isn't caught early the damage it does to your lungs in permanent.