Study: Pfizer vaccine is able to confront new Corona strains

A new study conducted by researchers from the University of Oxford in Britain concluded that the Pfizer vaccine has proven effective against new strains of the Coronavirus.

According to the study published in the journal "Research Security", researchers found that the vaccine stimulates the human immune system and makes it respond strongly against the two new Corona strains that were discovered in the United Kingdom and South Africa.

The study, which has not yet been reviewed by other scientists, relied on taking blood samples from people who recovered from Corona and health workers who received either one or two doses of the Pfizer vaccine.

The study found that the antibodies were moderately effective against the original virus after the first dose of the vaccine, while they were less effective against the British strain, and ineffective against the South African strain.

Nevertheless, all those who received the first dose had a strong response to the T cells, which are responsible for the immune response, to all of the strains.

"The first dose may not necessarily protect against infection, but it is very likely that it will increase the immune system's response the next time," said William James, professor of virology at Oxford University.

"So we think that the second dose produces a strong antibody response, because the T cells are already there, and ready to interact," he added.

James pointed out that "there are no complete guarantees that people who have received the vaccine or were previously infected may not become infected with the new strain, but what we do know is that their immune systems will respond well."

But he confirmed, however, that "90% of those who received the second dose of the vaccine had antibodies capable of neutralizing the virus and preventing its transmission."

The mutated strain of the emerging corona that was first discovered in Britain is now spread in 50 countries, according to the World Health Organization, while a similar strain was found in South Africa in 20 countries.

The World Health Organization confirms that the new mutated strain is more transmissible than the original virus.

Some emergency mutations to the virus raise concerns, and they may require modifications to the vaccine, while some may need booster doses.

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