Leg clots with pulmonary emboli and bed sores must be prevented. Prevention of tetanus is all important because there is no naturally acquired immunity. Even recovered tetanus patients are not protected and need vaccination to prevent another attack. Protection needs boosting every 10 years. I had my booster last year.
Prevention also involves the proper care of wounds.
Wounds contaminated with barnyard soil, sewage, or colon contents need special care. So do deep puncture or long neglected wounds where oxygen is scarce. These patients need 250 to 500 units of tetanus immune globulin. My surgeon-teacher made such an impression on me over 50 years ago that I don't forget my vaccine. Please remember yours.