If masks are worn, proper use and disposal is essential to ensure they are potentially effective and to avoid any increase in risk of transmission associated with the incorrect use of masks.

如果戴口罩，必须正确使用和处置，以确保其效力，避免因不正确使用口罩增加传播风险。

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If masks are worn, proper use and disposal is essential to ensure they are potentially effective and to avoid any increase in risk of transmission associated with the incorrect use of masks.

如果戴口罩，必须正确使用和处置，以确保其效力，避免因不正确使用口罩增加传播风险。

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