Experimental J&J vaccine protects monkeys in a single dose-look

By Julie Steenhuysen

CHICAGO, July 30 (Reuters) – Johnson & Johnson on Thursday kicked off U.S. human security trials for its COVID-19 vaccine after releasing miniature print of a look in monkeys that showed its simplest-performing vaccine candidate supplied robust protection in a single dose.

When uncovered to the virus, six out of six animals who purchased the candidate vaccine had been fully safe from lung illness and five out of six had been safe from infection as measured by the presence of virus in nasal swabs, per the look published within the journal Nature.

“This offers us confidence that we are going to check a single-shot vaccine in this epidemic and learn whether it has a conserving enact in contributors,” Dr. Paul Stoffels, J&J’s chief scientific officer, suggested Reuters in a mobile phone interview.

The U.S. authorities is backing J&J’s vaccine effort with $456 million in funding as fragment of a spending spree aimed at speeding manufacturing of a vaccine to discontinuance the pandemic, which has contaminated thousands and thousands and killed more than 660,000 of us.

Stoffels said prior exams of this selection of vaccine in assorted diseases discovered that a 2d shot greatly will enhance protection. However in a virulent illness a single-shot vaccine has a well-known income, sidestepping many of the logistical components fascinated by getting of us to strategy help help for his or her 2d dose.

The firm plans to absorb the query of one or two doses in its phase 1 trial, which kicked off this week within the US.

Reckoning on these results, J&J plans to start huge-scale, phase 3 making an strive out with a single-shot routine within the 2d half of of September. Spherical the same time, the firm will start a parallel phase 3 look making an strive out a two-shot routine of the vaccine, Stoffels said.

J&J’s vaccine uses a common icy virus identified as adnovirus form 26 or Ad26 to ferry coronavirus proteins into cells within the physique, inflicting the physique to mount an immune protection in opposition to the virus.

In the monkey look, scientists from J&J and Harvard’s Beth Israel Deaconess Scientific Center studied seven assorted doable vaccines in 32 animals and compared the implications to 20 take care of an eye fixed on animals who purchased placebo images.

Six weeks later, the general animals had been uncovered to the SARS-CoV-2 virus. All 20 animals that got the placebo developed excessive stages of virus of their lungs and nasal swabs.

In the most attention-grabbing-performing candidate, which J&J chosen for human making an strive out, none of the animals had virus of their lungs and most attention-grabbing one showed low stages of virus in nasal swabs. Lab exams showed they all had developed antibodies capapable of neutralizing the virus after a single shot.

“This look shows that even merely a single immunization with the Ad26 vaccine ends in neutralizing antibody responses and sturdy protection of monkeys in opposition to COVID-19,” said Dr. Dan Barouch, a vaccine researcher at Beth Isreal Deaconness who led the learn in collaboration with J&J.

(Reporting by Julie Steenhuysen; bettering by Richard Pullin)



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