student asking question

When can we use infection in plural form? Or is this speaker’s mistake?

teacher

Native speaker’s answer

Rebecca

In this video, it actually should be "the number of infected." The word "infection" is the singular and plural form of this word. You can use the word infections when you are discussing different types of infections, like a staph infection or a mrsa infection. You can use the word infected when discussing the past or a number of people who are infected, like the news anchor did in this video. Here are example sentences: Ex: He has a tooth infection. Ex: There are thousands of people infected with this new virus. Ex: She almost died due to multiple infections in her body.

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