Epidemiological means “about epidemiology” — and epidemiology is the study of how diseases move through groups of people, who gets ill, why, and what might slow the spread. So an epidemiological study, map, or report looks at patterns in a population, not at one patient’s body on the table.

Epidemiological means “about epidemiology”這個字意思是「跟epidemiology（流行病學）有關的」—— and epidemiology is the study of how diseases move through groups of people則是研究疾病如何在一群人之間傳播的學問， who gets ill, why, and what might slow the spread研究誰會生病、為什麼，以及什麼能減緩傳播。 So an epidemiological study, map, or report所以一份epidemiological的研究、地圖或報告 looks at patterns in a population看的是一整個族群裡的模式， not at one patient’s body on the table而不是診療台上單一病人的身體。

You will hear it in news about outbreaks, vaccines, and public health. It is a long, formal, scientific adjective.

You will hear it in news about outbreaks, vaccines, and public health你會在關於疫情爆發、疫苗和公共衛生的新聞裡聽到這個字。 It is a long, formal, scientific adjective這是個又長又正式的科學形容詞。

The related noun epidemic is the outbreak itself; this word is the “how we study and describe the spread” word. It does not, by itself, mean “very contagious”, though people sometimes stretch it that way in loose talk.

The related noun epidemic is the outbreak itself相關的名詞epidemic指的是疫情本身； this word is the “how we study and describe the spread” word而這個字則是「我們如何研究、描述傳播情況」的字。 It does not, by itself, mean “very contagious”它本身並不表示「傳染力很強」， though people sometimes stretch it that way in loose talk雖然大家在隨口說話時有時會這樣延伸使用。