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After months of progress, the arrival and spread of the Delta variant creates a serious obstacle to finally end the CVIV-19 pandemic. According to the American centers for the control of the disease and prevention (CDC), the "hypertransteible" strain is responsible for83.2% of new cases which had been genetically sequenced from July 17th. As a result, health experts now urge those who remain unvaccinated to get their shots to stop current epidemics largelyaffecting low vaccination areas. But while mounting the search found gunshotseffective at the Delta variant stopA new study showed that the Johnson & Johnson vaccine protects you the least of the very contagious strain.

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Depending on the results, which have been published online by Biorxiv but have not yet been examined by peers or published in a newspaper, the single dose may be less effective against bothThe variant of Delta surge And the variant of the lambda emerging as the réna style vaccines with two doses Pfizer and Moderna. The authors of the study conclude that the data suggest those who received the Johnson & Johnson Vaccine (J & J) canNeed a follow up to protect yourself.

"The message we wanted to give was not that people should not get the J & J vaccine, but we hope that in the future,It will be boosted with another dose of J & J or a boost with Pfizer or Moderna, "Nathaniel LandauPhD student, the principal investigator of the study and a virologist at the N.Y.U School of Medicine. Grossman's Grossman, saidThe New York Times.

The results have not surprised other experts, who cite high efficiency rates of double-shot vaccines. "I always thought and I have often said that J & J vaccine is a two-dose vaccine," "John Moore, a virologist in Weill Cornell Medicine in New York, saidThe temperature.

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But some emphasize that the results, which have been found using blood samples in a laboratory, do not accurately reflect conditions in the real world.Seema kumar, a spokesman for the J & J studies sponsored by the company, saidThe temperature That the conclusions of the study "do not speak to the total nature of immune protection" and that other small studies commissioned by Johnson & Johnson found that the vaccine "generated a strong and persistent activity against the alternative. at rapid diffusion ".

The CDC responded to the study by reiterating its previously issued statement that "Americans who were fully vaccinatedDo not need a reminder at this moment. But other experts exhort those who have obtained the unique dose vaccine atGet another shot.

"Astrazeneca, when combined with a Pfizer orBOOSTER OF MODERNA, shows a lot of protection levels against Delta, in terms of antibody levels generated in patients "Gupta wine, MD, Professor at the University of Washington Metric and Evaluation Institute, said at a 20 July appearance on the CNBC. "I think these One-Shot J & Jer should have the opportunity, while we complement our clinical trial ... I already say to my patients to do it, if they can access it."

When asked to clarify how much those who had received only one shot Johnson & Johnson were, Gupta said, "I think you are protected, probably the hospital and the severe results of said. , the delta variant, based on the data we have. [But], I do not think you have the same level of protection to transmit the virus that someone who has received two doses of the vaccine like Pfizer or Moderna. I think it's clear enough at this point. "

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