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

New Boosters Add Limited Protection Against Covid 19 Illness, First Real World Study Shows

A nurse loads a syringe with a Moderna COVID-19 booster vaccine in Jackson, Mississippi on November 18. Updated Covid-19 boosters that carry instructions to arm the body against currently circulating Omicron subvariants offer some protection against infections.