perhaps I can begin just simply by

describing vaccine development I mean at

its heart vaccine development is a

relatively simple concept first you

prove that the vaccine works is safe and

effective

yo

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[Music]

do you worry about what is going to kill

you heart disease cancer a car accident

most of us worry about things we can't

control like war terrorism the tragic

earthquake that just occurred in H

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In the 20th century, most vaccines took well over a decade

to research, test, and produce.

But the vaccines for COVID-19 cleared the threshold for emergency use

in less than 11 months.

The secret beh

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