English Measuring the Efficacy of the Covid-19 Vaccines

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Measuring the Efficacy of the Covid-19 Vaccines

There is interesting news about the Covid-19 vaccines. A few days ago, the Pfizer company announced its interim analysis report that the vaccine it produced had effectiveness or efficacy levels above 90 percent.

Oleh IQBAL MOCHTAR
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There is interesting news about the Covid-19 vaccines. A few days ago, the Pfizer company announced its interim analysis report that the vaccine it produced had effectiveness or efficacy levels above 90 percent. This means that 90 percent of subjects who receive its vaccine do not develop Covid-19. [...]