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Articles on Vaccine efficacy

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Israel has the highest rate of COVID-19 vaccine coverage worldwide, and so has been one of the first countries to report on vaccine effectiveness. Abir Sultan/EPA-EFE

COVID vaccines: how to make sense of reports on their effectiveness

Real-world studies of vaccines aren't directly comparable with clinical trials, but their results are still good news.
On Aug. 11, Russian President Vladimir Putin announced that a coronavirus vaccine developed in the country has been registered for use. Russian Health Ministry/Handout/Anadolu Agency via Getty Images

A COVID-19 vaccine needs the public’s trust – and it’s risky to cut corners on clinical trials, as Russia is

As Russia fast tracks a coronavirus vaccine, scientists worry about skipped safety checks – and the potential fallout for trust in vaccines if something ends up going wrong.

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