morbidity

noun

1. (countable, uncountable)The quality of being unhealthful or diseased, sometimes including the cause.
2. (countable, uncountable)The quality of being morbid; an attitude or state of mind marked by gloom.

   “He taught him how to be superior to human foibles and how to give a godlike laugh at himself as a way of fending off morbidity. He did all the things for him that a woman is grateful for, except that Magnus is a man.”

3. (countable, uncountable)The incidence of a disease, as a rate of a population which is affected.
4. (countable)An occurrence of illness or disease, or a single symptom of that illness.
5. (countable)Adverse effects caused by a medical treatment such as surgery.
6. (countable, uncountable)The sickness rate of a population.