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J&J COVID-19 booster cuts Omicron hospitalizations by 84%, examine suggests – Nationwide

J&J COVID-19 booster cuts Omicron hospitalizations by 84%, examine suggests – Nationwide

A booster dose of Johnson & Johnson Inc’s single-dose COVID-19 vaccine was 84% efficient at stopping hospitalization in South African healthcare employees who turned contaminated because the Omicron variant unfold, researchers mentioned on Thursday.

The actual-world examine, which has not been peer-reviewed, was based mostly on a second dose of the J&J vaccine administered to 69,092 employees between Nov. 15 and Dec. 20.

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Well being Canada received’t launch over 300K J&J COVID-19 vaccine doses as a consequence of high quality points

An preliminary course of inoculation has been proven to supply solely enormously decreased safety towards an infection by Omicron, which is spreading rapidly by way of many nations after first being recognized in southern Africa and Hong Kong in late November.

Nevertheless, a number of research have advised {that a} booster dose gives important safety towards extreme sickness from the variant.

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The South African examine confirmed the J&J vaccine’s effectiveness at stopping hospitalization rose from 63% shortly after a booster was administered to 84% 14 days later. Effectiveness reached 85% at one to 2 months post-boost.

“It reassures us that COVID-19 vaccines proceed to be efficient for the aim they had been designed, which is to guard folks towards extreme illness and demise,” mentioned Linda-Gail Bekker, the examine’s co-lead investigator.


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“That is yet one more piece of proof that we now have not misplaced that influence even within the face of a really mutated variant.”

Bekker mentioned the jury was “nonetheless out” on the problem of additional boosters for the J&J vaccine, which is run as a single shot for the primary full dose, and which is simpler to move to distant African rural areas than the rival, two-dose Pfizer mRNA vaccine as a consequence of higher warmth tolerance.

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“What we’re displaying is that two doses actually restore full safety, and I don’t assume we are able to extrapolate from this that we’re going to want a 3rd or a fourth increase in any respect.”

Learn extra:

Omicron FAQ: Every little thing that you must know in regards to the COVID-19 variant

Researchers mentioned their evaluation had a number of limitations, together with quick follow-up occasions. These averaged eight days for healthcare employees who had acquired their increase throughout the earlier 13 days, or 32 days for these boosted 1-2 months earlier.

In an organization assertion, Mathai Mammen, world head at Janssen Analysis & Growth, mentioned the agency believed safety may very well be as a consequence of sturdy T-cell responses induced by the vaccine.

“Moreover, these knowledge recommend that Omicron just isn’t affecting the T-cell responses generated by our vaccine,” he mentioned.

— Reporting by Wendell Roelf

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