Coronavirus: Scientist says vaccine could halve COVID-19 transmission

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One of the scientists behind the experimental coronavirus vaccine developed by BioNTech and Pfizer says he's confident that it could halve the transmission of the virus, resulting in a “dramatic” curb of the virus’ spread.

The chief executive of Germany’s BioNTech said Sunday that it is “absolutely essential” to have a high vaccination rate before next autumn to ensure a return to normal life next winter. He says if everything continues to go well, deliveries of the vaccine will start late this year or early next year.

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He says he's confident that transmission between people will be reduced by perhaps 50 percent through a highly effective vaccine.

Pfizer and BioNTech said last week that interim results showed the vaccine was 90 percent effective.

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