A fairly hefty dose of parasites seems to be required to prompt strong immunity, so he says areas where malaria hits hard during a single season would be the best places to try the approach.

寄生虫的数量越高似乎就需要更强的免疫力。因此他说，在单独季节遭受疟疾重创的地区将会是进行这种实验的最好地方。

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A fairly hefty dose of parasites seems to be required to prompt strong immunity, so he says areas where malaria hits hard during a single season would be the best places to try the approach.

寄生虫的数量越高似乎就需要更强的免疫力。因此他说，在单独季节遭受疟疾重创的地区将会是进行这种实验的最好地方。

youdao