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Coronavirus: How do you vaccinate 7.7 billion people?

Five challenges of distributing a Covid-19 vaccine to billions of people.

from BBC News - World https://ift.tt/3o8y8Jq
Coronavirus: How do you vaccinate 7.7 billion people? Coronavirus: How do you vaccinate 7.7 billion people? Reviewed by swadu on November 29, 2020 Rating: 5

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