Coronavirus: How do you vaccinate 7.7 billion people?
Five challenges of distributing a Covid-19 vaccine to billions of people.
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November 30, 2020 at 05:42AM
Five challenges of distributing a Covid-19 vaccine to billions of people.
from BBC News - World https://ift.tt/3o8y8Jq
via IFTTT
via Blogger https://ift.tt/2Jnenzd
November 30, 2020 at 05:42AM
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