(A one in 100 year flood, hurricane/superstorm, or disease each have a 30% chance of happening during a 30 year loan and 78% chance of happening during a 78 year life.)

Look at LA skid row has created diseases from the middle ages.. 

Mice carry so many diseases.

Cat and dog feces can be a major health hazard as it may contain a parasitic disease.

I've had tenants dying from cancer, liver disease and one tenant was in a coma for 6 months.

Raynaud's disease is a medical condition that can cause people to always feel cold, especially hands and feer, even in warm temperatures.

It is a horrible disease and if it goes full blown (the day you close), you'll suffer sleepless nights, stress, lots of depressing road trips to your project, lost capital, and most likely be stuck with a rental house you won't want to own.

Then the misinformation is spread like a disease into other newbies.  

My dad in particular needs a sale to happen so he can retire as he's been living with the disease M.S. for quite some time. 

This site has definitely become an infectious disease!