morbidity

1. The quality of being unhealthful or diseased, sometimes including the cause. (countable, uncountable)
2. The quality of being morbid; an attitude or state of mind marked by gloom. (countable, uncountable)
3. The incidence of a disease, as a rate of a population which is affected. (countable, uncountable)
4. An occurrence of illness or disease, or a single symptom of that illness. (countable)
5. Adverse effects caused by a medical treatment such as surgery. (countable)
6. The sickness rate of a population. (countable, uncountable)

Plural morbidities