A major study of data from Israel showed Pfizer shot cut symptomatic cases drastically across all age groups
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The first major real-world study of the Pfizer/BioNTech vaccine to be independently reviewed shows the shot is highly effective at preventing Covid-19, in a potentially landmark moment for countries desperate to end lockdowns and reopen economies.
Until now, most data on coronavirus vaccines has come under controlled conditions in clinical trials, leaving an element of uncertainty about how the results would translate into the real world.
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