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How Protected Are You With Just One Dose of a COVID-19 Vaccine? Here Are Some Stats [View all]
More than 179 million Americans and more than 44 million Britons have received their first dose of a two-shot COVID-19 vaccine.
The US has authorized vaccines from Moderna and Pfizer-BioNTech, while the UK has authorized Pfizer's shot as well as one made by AstraZeneca and Oxford University. Both countries have authorized Johnson & Johnson's vaccine, which is a single dose.
https://www.sciencealert.com/these-stats-show-you-why-you-really-should-get-both-shots-of-the-available-vaccines
The article gives hard stats for the most widely distributed vaccines. The second shot of the mRNA vaccines makes sure the immune system will remember the bug in the future.
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