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13:03
Wednesday 02 December 2020
Books – Sayed Metwally
Britain has announced its approval for the use of the “Pfizer-Biontech” vaccine against Covid 19, and it will be released for use next week.
The UK government said today, Wednesday: “The government today accepted the recommendation of the Independent Agency for the Regulatory of Medicines and Health Products (MHRA) to approve the use of the COVID-19 vaccine manufactured by Pfizer-BioNTech, according to Russia Today.
What did Egypt do?
Egypt took the initiative to reserve a large amount of the American “Pfizer” vaccine after it showed encouraging results in its experimental stages, and Egyptian Health and Population Minister Hala Zayed confirmed in press statements, that the ministry had taken the initiative to seize 20 percent of Egypt’s needs from the Corona vaccine produced by the American company Pfizer. And 30 per cent of the Oxford vaccine was in Britain.
Egypt has taken the initiative to seize 20 million doses of Pfizer vaccine, benefiting approximately 10 million citizens, as each person needs two doses.
Let’s go through everything you need to know about the Pfizer vaccine versus other vaccines:
Pfizer
How does it work?
It will involve injecting some of a genetic material from the Corona virus into the participants, this will expose their immune system to a weak copy of the virus, so that it triggers a response that protects them from the real virus.
Promising results
US pharmaceutical giant Pfizer said its experimental “Covid 19” vaccine, produced in collaboration with Germany’s “Biontech”, is more than 90 percent effective after the end of the third phase of their vaccine tests for the emerging corona virus, according to “Sky News”.
Modern
The American biotechnology company Moderna has confirmed that its vaccine is nearly 95% effective and is planning to file emergency approval applications in the United States and around the world within weeks, and says it expects to have nearly 20 million. doses ready for shipment to the United States by the end of the year and production between 500 million and 1 billion doses globally in 2021, according to the Daily Mail.
How does it work?
The vaccine is RNA-based, similar to that developed by Biontech and Pfizer.
– Sanofi
It could be ready in the first half of 2021, the vaccine entered the second phase of clinical trials in September, which included 440 adults, and will reach the third phase of the studies this December, which means that the development of the vaccine may take longer.
How does it work?
Participants are injected with anti-Coronavirus DNA code and a chemical that makes it more effective, hopefully leading to an immune response.
Sputnik, Russia
According to the Kremlin, the Sputnik V vaccine is safe, but scientists have criticized it. The Russian Institute of Medical Research and the Russian Ministry of Defense developed this vaccine, but it has come under severe criticism inside and outside Russia because the results of human experiments have not yet been published and large human studies have not been approved. A study involved 40,000 volunteers on August 26.
Scientists say the vaccine was administered quickly without proper controls and could pose a risk to those who take it. The Kremlin began appealing for volunteers to get the vaccine this week after the first batch was produced, according to the TASS news agency.
How does it work?
The Russian vaccine works by carrying a piece of the Coronavirus genetic code to a participant via another virus, which hopefully results in an immune response.
– Sinovac
It is unclear when the Sinovac vaccine will be available. The vaccine entered the final phase of trials in Brazil in July and then in Indonesia in August. The results show that while younger and middle-aged people produce the antibodies, the elderly have a weaker immune response. The vaccine granted emergency approval for limited use in July, reports indicate, although it appears to be still in testing.
It was previously reported as second after the Oxford vaccine, but full test results have not yet been published, it is one of four candidate vaccines under development in China.
How does it work?
It involves injecting patients with an inactivated form of the virus, which causes their immune systems to develop a response.
Oxford vaccine
The University of “Oxford” and the pharmaceutical company “AstraZeneca” have announced the results of the third phase of testing the Corona virus vaccine, with the declared average efficacy reaching 70%, which is much lower than 94, 5% to 95%, reported by the other two main candidates, “Moderna”, and “Pfizer” according to the BBC.
It is possible that some doses of the vaccine will be available later this year in small quantities for some groups, especially the elderly and those most in need of vaccination, according to the British newspaper Daily Mail.
How does it work?
The vaccine uses a weakened version of the common cold adenovirus designed to carry the protein out of the SARS-Cove-2 virus.
Once participants are exposed to this protein, they are expected to prepare their immune systems for a positive response if they are subsequently exposed to the real virus.
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