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AstraZeneca vaccine more effective the longer you wait for second shot, study shows – Sydney Morning Herald
The new research, led by the scientists who developed the vaccine, lends support to Australia’s decision to recommend a three-month wait between jabs.
It also opens the way for other nations with out-of-control epidemics to delay the second dose, allowing them to roll out the first dose more widely.
However, the data sourced from thousands of people enrolled in clinical trials across Britain, Brazil and South Africa is still quite uncertain. The trial was not originally designed to test the effect of a bigger gap between doses; that was caused by delays in manufacturing.
That means the scientists could not properly randomly assign trial participants,…
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