The CEO of “Pfizer”, Albert Burla, said that those receiving the emerging vaccine against the new Corona virus, “Pfizer Biontech”, will likely need a third booster dose after a period of 6 to 12 months, from the date of receiving the first and second vaccinations.
Burla explained that the immunization against Covid-19 may be annual, and he added: “There are vaccines with a sufficient single dose, such as those used to prevent polio, while there are others annually, such as influenza.”
And recent clinical trials showed that the Pfizer vaccine was more than 90% effective in preventing Covid-19, 6 months after the second dose.
The United States also leads the world in terms of the number of doses administered, followed by China, India, the European Union, andUnited kingdom And Brazil, Turkey and Indonesia, regarding vaccination campaigns.
Well topping United State Countries in the world in terms of the number of injuries, followed by India, Brazil, France, Russia, the United Kingdom, Italy, Turkey, Spain, Germany, Colombia, Poland, Argentina, Mexico and Iran, and the United States leads the world in terms of the number of deaths, followed by Brazil, Mexico, India, the United Kingdom, Italy, Russia, France and Germany.
Aggregate data showed that the total number of Coronavirus infections around the world exceeded 139 million as of Friday morning, while the number of deaths reached 2.99 million.
With regard to administering vaccines, the data collected for “Bloomberg News” showed that about 832 million doses of anti-virus vaccines were given around the world.
At the same time, Dr. Fatma Mariño, an epidemiologist at the University of Sao Paulo, Brazil, said that the Corona It caused the death of 2,060 children under the age of nine, including more than 1,300 infants.
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