Health

One-shot Johnson & Johnson COVID-19 vaccine  is less effective against the Delta variant


BREAKING NEWS: One-shot Johnson & Johnson COVID-19 vaccine is LESS EFFECTIVE against the Indian ‘Delta’ variant than Pfizer and Moderna shots, study suggests

  • A new study looked at blood samples of patients who received the Pfizer, Moderna and Johnson & Johnson vaccine against the Indian ‘Delta’ variant
  • Antibody levels in J&J patients were five to seven times lower when exposed to the Delta variant compared to three times lower in Pfizer and Modera patients
  • This suggests the 13 million Americans who received J&J will need boosters to protect against variants 

The Johnson & Johnson COVID-19 vaccine is less effective against the Indian ‘Delta’ coronavirus variant than other shots, a new study suggests.

Researchers found that antibody levels from people who received the one-dose vaccine were twice as low compared to those given the two-dose Pfizer-BioNTech or Moderna vaccines.  

The findings add to the growing body of evidence that the 13 million Americans who received J&J will need boosters to protect against highly infectious variants.

It comes as Dr Rochelle Walensky, director of the Centers for Disease Control and Prevention (CDC), testified before the Senate Health, Education, Labor and Pensions committee on Wednesday that the variant makes up 83 percent of all new cases.

Johnson & Johnson, AstraZeneca and the University of Oxford have begun studying whether their COVID-19 vaccines can be modified. Pictured: J&J COVID-19 vaccines on a table in Los Angeles, May 2021

Antibody levels among people who received Johnson & Johnson’s COVID-19 vaccine were low against the Indian ‘Delta’ coronavirus variant.  Pictured: Johnson & Johnson’s Covid-19 vaccines are seen on a table in Los Angeles, mAY 2021

In the study, which has not been peer-reviewed, blood samples from patients vaccinated the three approved shots were tested against the variant. 

Researchers found that antibody levels in J&J patients were five to seven times lower when exposed to the Delta variant.

Comparatively, levels in Pfizer and Moderna patients were three-fold lower.

The findings are in line with a UK study, which found that the AstraZeneca vaccine – which is made with the same technology that the J&J vaccine uses – is 33 percent effective against symptomatic disease caused by Delta.

‘The message that we wanted to give was not that people shouldn’t get the J.&J. vaccine, but we hope that in the future, it will be boosted with either another dose of J&J or a boost with Pfizer or Moderna,’ lead author Dr Nathaniel Landau, a virologist at NYU’s Grossman School of Medicine, told The New York Times.

This is a breaking news story and will be updated. 



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