Study says Johnson & Johnson COVID-19 vaccine may not work well against delta variant


Johnson & Johnson’s one-time coronavirus vaccine is much less effective against the Delta variant than the original version of COVID-19, according to New study published online على Tuesday.

The study, which examined blood samples in a lab setting and has not yet been peer-reviewed, indicates that anyone who has had a J&J
+ 0.94%

The vaccine may need to receive a second injection as the variant continues to spread throughout the United States.

“The message we wanted to get across was not that people shouldn’t get the J&J vaccine, but hopefully in the future it will either be boosted with another dose of J&J or boosted with Pfizer or Moderna,” according to study leader Nathaniel Landau, a virologist at Grossman College of Medicine. New York University, He told the New York Times,.

Earlier this month, New Jersey-based Johnson & Johnson published Preliminary data indicates that his vaccine was effective against the delta variant, first found in India, at least eight months after inoculation.

However, in May, the British government Published a study Indicates that a single dose of AstraZeneca
+ 1.88%

The vaccine, which is similar in composition to Johnson & Johnson, was only 33 percent effective against “symptomatic disease” caused by the delta variant, while the two doses were 60 percent effective against symptomatic disease.

J&J spokeswoman Seema Kumar told The Times that the data from the latest study “doesn’t speak to the full nature of immune protection.”

Last month, Centers for Disease Control and Prevention (CDC) Director Dr. Rochelle Walinsky On NBC’s “Today” that “we have every reason to believe … that J&J will perform well against the Delta variant, as it has so far against other US-traded variants.”

Walinsky told lawmakers earlier on Tuesday That the delta variant currently accounts for 83 percent of all COVID-19 cases in the United States. During the same session, White House chief medical advisor Dr. Anthony Fauci said researchers are still evaluating whether booster shots are needed to provide additional protection.

“We don’t want people to think that when you talk about boosters, it means that vaccines aren’t effective,” Fauci said. “It’s very effective, we’re talking about the durability of it.”

Preliminary studies indicate that mRNA vaccines are manufactured by Moderna

and Pfizer
+ 2.24%

+ 1.04%

It is effective against the delta variant and can provide protection for years, provided the virus has not metamorphosed beyond its initial form.

The delta variant has been blamed for increased cases, hospitalizations and deaths in recent weeks, although numbers in all groups are still well below the peak of last winter’s increase and the vast majority of hospitalizations and deaths occur among unvaccinated people.

Despite this, health officials in Los Angeles and Las Vegas have reimposed mask mandates indoors, regardless of individuals’ vaccination status.

More to track …
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