There are many ways to get it. It's if the bacteria is present.

http://www.cdc.gov/tetanus/about/cau...nsmission.html

Had the booster for years. Won't be getting it again. Take care of your scratches, cuts, etc. If they start to look funny than get to your doctor.

I had whooping cough when I was 3 months old. I almost died. That was a long, long time ago.