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The two companies, “Pfizer” and “Biontech” have announced that the vaccine against “Covid-19” that they are developing “is 90% effective”, after preliminary analysis of the results of the third phase of clinical trials, which is the last before submitting a license application.
The two companies said in a joint statement, that “this vaccine effectiveness” was measured by comparing the number of participants infected with the emerging corona virus in the group that received the vaccine and the number of people infected from another group. who received a placebo vaccine, “7 days after receiving the second dose” and 28 days after Receive your first dose.
WHO Director Tedros Adhanom Ghebreyesus said in a tweet on Twitter: “We welcome the encouraging news on vaccines from (Pfizer) and (Biontech) … and congratulations to all scientists and partners around the world whole who are developing new safe and effective tools to defeat Covid-19. “
He added: “The world is witnessing unprecedented scientific innovation and cooperation to end the epidemic!”
It should be noted that at exactly 11 a.m. GMT, after the two companies announced the Corona vaccine, European financial markets saw a significant increase of more than 5% in Paris, Frankfurt and Milan, and of 3.29% in London.
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