CDC study shows natural immunity better than vaccine induced immunity
The CDC, in the January 2022 edition of the Morbidity and Mortality Weekly Report, reports that since Delta case rates are lower in the naturally infected than those with vaccine induced immunity alone. In the report they state:
During May–November 2021, case and hospitalization rates were highest among persons who were unvaccinated without a previous diagnosis. Before Delta became the predominant variant in June, case rates were higher among persons who survived a previous infection than persons who were vaccinated alone. By early October, persons who survived a previous infection had lower case rates than persons who were vaccinated alone.
León TM, Dorabawila V, Nelson L, et al.
Read the full report at https://www.cdc.gov/mmwr/volumes/71/wr/mm7104e1.htm.