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The American Moderna vaccine develops twice as many antibodies as a dose of the Pfizer-Biontech vaccine. This is the conclusion of a study published in the Journal of the American Medical Association, according to the German site “Focus”.
The study included a follow-up of 2,500 workers in Belgian hospitals, where it was found that the level of antibodies in individuals who were not infected with the coronavirus emerge before receiving two doses of Moderna vaccine. at an average of 2,881 antibody units per milliliter, compared to 1,108 units per milliliter in a similar group who got two doses of the Biontech-Pfizer vaccine.
Researchers overseeing the study thought the reason may have been that the Moderna vaccine contains a larger amount of the virus’s active ingredients, 100 micrograms, compared to 30 micrograms in the Pfizer-Biontech vaccine. It can also be caused, the researchers explained, by the time interval between the first and second dose of the vaccine, in which Moderna places a 4-week interval between the two doses, compared to three weeks between the two doses of Biontech. -Pfizer. .
As in previous studies, the study generally indicates that a strong antibody response provides good immune protection against the Corona virus. However, this is not the only determining factor. The human immune system is very complex and interacts on several levels. Therefore, T cells play an equally important role in preventing future infections.
“Antibodies alone don’t necessarily tell you how protective you really are,” German immunologist Carsten Wassel said in an interview with DW. “You can definitely have very low amounts of antibodies, which means you can get infections, but you can have a strong T-cell response, which keeps you from getting very sick,” Vazel continues.
However, these T cells were not examined in the Belgian study.
AM / AH
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Different nationalities .. Find out more about the most famous authorized vaccines in the world
Biontech / Pfizer vaccine
Developed by the German Piontech in collaboration with the American Pfizer. Its effectiveness, according to the latest clinical trials, is 95 percent. It is the first corona vaccine authorized by the World Health Organization. It is based on mRNA technology and is the most widely used vaccine in the Western world, but it has been criticized for the difficulty in storing it because it must be below 70 degrees Celsius to maintain its effectiveness.
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Different nationalities .. Find out more about the most famous authorized vaccines in the world
Moderna
The second vaccine to be licensed by the European Union after Pfizer / Biontech. Developed by the American company Moderna in cooperation with the United States National Institutes of Health for Infectious Diseases. Its efficiency reached 95 percent. It adopts almost the same technology (mRNA), but its storage conditions are less strict and it needs minus 20 degrees. Despite this, the quantities of its worldwide distribution remained lower than the first vaccine, which can be explained by its price of $ 33 per dose, unlike the second vaccine of $ 20.
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Different nationalities .. Find out more about the most famous authorized vaccines in the world
Sputnik V
It is the first vaccine in the world whose developers announce its effectiveness against Corona, even if it had not yet passed the third stage. It was developed by the Russian State Aesthetic Institute, and its efficiency reaches 92%, according to Russian figures, but with Western scientific hesitation due to the lack of published data about it. It has been imported by several countries, including Hungary, Algeria, Serbia and the United Arab Emirates. It’s easy to carry and inexpensive ($ 10) and uses adenovirus (or adenovirus) vector technology.
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Different nationalities .. Find out more about the most famous authorized vaccines in the world
AstraZeneca / Oxford
The second vaccine authorized by the World Health Organization and the third for the European Union. The cheapest vaccines, but also the least effective (70%), and many countries have questioned its effectiveness against the elderly, as well as against mutated versions. Developed by the Anglo-Swedish company AstraZeneca in cooperation with the University of Oxford. It was imported by several countries after the contribution of the Serum Institute of India to its production. It is easy to transport and store and it also uses glandular conveyor technology.
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Different nationalities .. Discover the most famous approved vaccines in the world
Sinopharm
Developed by Chinese state-owned company Sinopharm with the Beijing Institute of Biologics. It was first introduced by the United Arab Emirates before China allowed it, and then it was imported by several countries including Morocco, Jordan and Egypt. Its effectiveness rate, according to its manufacturers, has reached 79%, but the scientific data is not published correctly. It uses the technique of inactivated virus injection, and the biggest mystery surrounding it is its price, as several reports have indicated that the dose is not less than $ 30, while others have mentioned a price. lower or higher.
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Different nationalities .. Find out more about the most famous authorized vaccines in the world
Coronavac
It was produced by the Chinese company Sinovac, but its license in China took longer. Its effectiveness is controversial, as tests in Brazil have shown it to be no more than 51%, but other tests in Turkey, which was among the first to allow it, have increased its effectiveness to 91%. It uses the same technology as the Sinopharma vaccine, and there are many questions surrounding it due to lack of data, including its price, which has not been released, although reports put it at ten dollars.
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Different nationalities .. Discover the most famous approved vaccines in the world
Johnson & johnson
It was developed by the American company “Johnson & Johnson”, and South Africa began to use it, although it was not licensed in the United States or Europe, after discovering that he was able to cope with the mutated version, contrary to what was shown by the first experiments. Its effectiveness is estimated to be 66 percent worldwide and 72 percent in America. It differs from others in that it is a single dose, which further enhances its chances of spread. It uses adenoviral vector technology and is easy to store.
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