https://www.nytimes.com/2021/06/24/world/europe/covid-vaccine-mix-and-match-pfizer-moderna.html
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6/25/21 at 2:06pm
Organization
New York Times
Author
Emily Anthes
38 words
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Several countries are allowing mix-and-match inoculation, which scientists hope will have benefits, and Chancellor Angela Merkel of Germany is among those to get it.
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