What is the chaces of me getting a deadly dissease?

I am worried every day because i use public transport and i was curious...

You are probably more likely to develop a form of cancer opposed to getting a deadly disease from public transport. Unless the next epidemic starts, I'd say you really don't have much to worry about. Just keep yourself clean.

Depends on the disease and how it spreads. Also the country you're living in may play a role. Anyways, you won't get HIV or something just by touching a grip or anything else.

You probably will not, once you get older and you become weaker this could happen. Id be more scared of getting in a car accident, so many people die from that vs a disaese. Also if you do regular checks with ur doctor it certianly isnt a problem