何时在室内戴口罩

World Health Organization (WHO) published this video item, entitled “何时在室内戴口罩” – below is their description.

在COVID-19大流行期间,如果你对何时戴口罩感到困惑,请遵循这些建议。

更多信息:www.who.int/epi-win

World Health Organization (WHO) YouTube Channel

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In This Story: World Health Organization

The World Health Organization is a specialized agency of the United Nations responsible for international public health. The WHO Constitution, which establishes the agency’s governing structure and principles, states its main objective as “the attainment by all peoples of the highest possible level of health.”

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