英和和英

The study of morbidity ¹ deals with the investigation of illness ², sickness ², ill-health ² or disease ² in a population. Two aspects are considered: the incidence of disease ³ and the prevalence of disease ⁴ according to whether the new cases of disease ⁵ are considered or the number of cases existing at one point in time. The compilation of morbidity statistics ⁶ is hampered by the lack of a sharp distinction between health and the morbid state ⁷. Nosology ⁸ and nosography ⁹ contribute respectively to the classification and description of diseases.

• 2. Disease, illness, or sickness are used as collective nouns in the singular, or both in the singular or plural to designate specific ailments.

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