South African Covid variant reduced the efficacy of Pfizer and Moderna vaccines

South African Covid variant reduced the efficacy of Pfizer and Moderna vaccines

The South African Covid variant reduced the efficacy of Pfizer and Moderna vaccines. In this article you will find out all the details you must know. Keep reading to discover all the information!

The South African Covid variant reduced the efficacy of Pfizer and Moderna vaccines. In this article you will find out all the details you must know. Keep reading to discover all the information!

Studies published in the scientific New England Journal of Medicine indicate that Pfizer and Moderna vaccines against the coronavirus showed a reduction in their level of protection against the South African variant.

However, specialists pointed out that the drop recorded should not be alarming because it remains above-expected levels.

Studies published in the scientific New England Journal of Medicine indicate that Pfizer and Moderna vaccines

For the study, scientists developed a virus that contains the same mutations found in the strain first discovered in South Africa. They then tested the engineered virus against blood taken from people who had been given the vaccine, and found a two-thirds reduction in the level of neutralizing antibodies compared to its effect on the most common version of the virus prevalent in the United States trials.

However, there is one detail that does not yet allow us to determine if Pfizer's vaccine will be ineffective against this new variant: there is still no benchmark that establishes the level of antibodies necessary to protect against the virus.

For the study, scientists developed a virus that contains the same mutations found in the strain first discovered in South Africa.

Pei-Yong Shi, the co-author of the study, believes that the Pfizer vaccine "probably" is effective against the variant, and even noted that if the variant reduces efficacy, the vaccine should continue to help protect against severe disease. and consequently death.

This factor is essential, as it would prevent the collapse of health systems, which reached the brink of capacity in various parts of the world.

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