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Updated Covid vaccine has 54% effectiveness, new data suggest (www.statnews.com)

submitted 9 months ago* (last edited 9 months ago) by MicroWave@lemmy.world to c/health@lemmy.world

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New data released Thursday by the Centers for Disease Control and Prevention suggest that the most recent Covid-19 booster offers about 54% percent protection against infection with the virus.

A study published in the CDC’s online journal Morbidity and Mortality Weekly Report showed that the updated vaccine was essentially equally effective at protecting against the strain targeted by the vaccine — called XBB.1.5 — and the JN.1 subvariant, which emerged after the vaccine was made. JN.1 is currently the dominant virus circulating in the United States.

Ruth Link-Gelles, an author of the study, said it shows that the latest Covid shot offers significant protection to recipients.

“We know that Covid is continuing to cause thousands of hospitalizations and hundreds of deaths in this country each week,” Link-Gelles, the vaccine effectiveness program lead in the CDC’s National Center for Immunization and Respiratory Diseases, told STAT. “And 50% added protection against Covid-19 is really going to be a meaningful increase in protection, especially for those at highest risk.”

Arnold Monto, a veteran vaccine effectiveness researcher at the University of Michigan, said the findings are what are expected at this point for Covid vaccine boosters.

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[–] gregorum@lemm.ee 25 points 9 months ago

FYI, this is about the same effectiveness as the annual flu vaccine has.

[–] Jakdracula@lemmy.world 13 points 9 months ago (1 children)

Is that good? Because it doesn’t sound good.

[–] Schmuppes@lemmy.world 29 points 9 months ago (2 children)

54% effectiveness against infection sounds pretty good to me.

[–] scytale@lemm.ee 8 points 9 months ago (1 children)

Ohh. So 54% effective against getting infected in the first place? That sounds pretty good indeed.

[–] Mongostein@lemmy.ca 2 points 9 months ago (1 children)

But does is stack with mage armour?

[–] zainitopia@lemmy.world 1 points 9 months ago

And what happens if you add big poppa pump Scott steiner to the mix?

[–] MahnaMahna@lemmy.world 3 points 9 months ago

I don't know if it's because this variant has milder symptoms or because I was boosted in October, but I got COVID in November and felt almost nothing besides mild irritating cold-like symptoms. I do suspect that the booster helped though because a friend who hasn't yet gotten a booster got sick around the same time and felt a lot worse.

[–] Tolookah@discuss.tchncs.de 11 points 9 months ago* (last edited 9 months ago) (1 children)

I've been reading about the different vaccines available today, and I found different numbers from October. https://www.yalemedicine.org/news/covid-19-vaccine-comparison

Though it looks like the JN.1 variant is new since September, and that's likely what drives the new data down. It had 3.5% of new cases in November, 21% in December and 85% in January. (Edit Source: https://www.yalemedicine.org/news/jn1-coronavirus-variant-covid)

[–] runner_g@lemmy.blahaj.zone 2 points 9 months ago

Outbreak.info is another great site for tracking covid variants. The company I work for makes covid detection PCR kits and we use this site to guide our products.