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How do Vaccines Offer Protection Against COVID-19?
Published on Jan 09, 2021
Video Transcript
[MUSIC PLAYING]
JOHN WHYTE: How do vaccines
offer protection
against COVID-19?
A population is said to reach
herd immunity against a disease
like COVID
when enough of the population
becomes immune to it,
making continued spread
unlikely.
We can reach herd immunity
by letting COVID naturally
progress,
but that would mean too many
people getting severely
ill or even dying.
A better way to reach herd immunity is with a vaccine. Vaccines train the immune system to create the same disease-fighting antibody proteins your body produces when you're infected with COVID, except you don't get sick. Scientists think that once around 70% to 80% of us are vaccinated, we'll reach herd immunity. Then everyone will be safer, and eventually, life can go back to normal.
A better way to reach herd immunity is with a vaccine. Vaccines train the immune system to create the same disease-fighting antibody proteins your body produces when you're infected with COVID, except you don't get sick. Scientists think that once around 70% to 80% of us are vaccinated, we'll reach herd immunity. Then everyone will be safer, and eventually, life can go back to normal.