Coronavirus: Why It Hits High-Income Countries Hardest

冠状病毒:为什么它对高收入国家的打击最严重

Science Rules! with Bill Nye

科学

2021-03-16

24 分钟
PDF

单集简介 ...

Dr. Siddhartha Mukherjee takes us through his investigation into why low-income countries seem to have largely escaped the pandemic’s wrath — and why they still need to get vaccines.
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