New boosters add limited protection against Covid-19 illness-- first real-world study

New boosters add limited protection against Covid-19 illness, first real-world study shows | CNN Updated Covid-19 boosters that carry instructions to arm the body against currently circulating Omicron subvariants offer some protection against infections, according to the first study to look at how the boosters are performing in the real world. However, the protection is not as high as that provided by the original vaccine against earlier coronavirus variants, the researchers say. Brenda Goodman CNN

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The new study found that the updated boosters work about like the original boosters. They protect against symptomatic infection in the range of 40% to 60%, meaning that even when vaccine protection is its most potent, about a month after getting the shot, people may still be vulnerable to breakthrough infections.

That’s in about the same range as typical efficacy for flu vaccines. ...