In many counties, towns and nursery schools — within Washington state, Oregon, Vermont and California, especially-vaccination rates are now far below the herd-immunity level.

现在，许多县、镇以及托儿所(特别是华盛顿、俄勒冈、佛蒙特、加利福尼亚等州)，接种率远远低于群体免疫水平。

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In many counties, towns and nursery schools — within Washington state, Oregon, Vermont and California, especially-vaccination rates are now far below the herd-immunity level.

现在，许多县、镇以及托儿所(特别是华盛顿、俄勒冈、佛蒙特、加利福尼亚等州)，接种率远远低于群体免疫水平。

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