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Pfizer Identifies Fake Covid-19 Shots Abroad as Criminals Exploit Vaccine Demand

Chinese Covid-19 vaccines offer relatively low levels of protection compared with some of their foreign rivals. Here is why China is joining other countries in considering mixing and matching vaccines as a key to overcoming multiple vaccination challenges at once.

Illustration: Ksenia Shaikhutdinova

Featured article licensed from the Wall Street Journal.

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