https://justthenews.com/politics-policy/coronavirus/report-covid-vaccine-antibody-levels-drop-nearly-10-fold-after-about

Apreliminary study this week claimed to have found a steep reduction in the number of coronavirus-fighting antibodies in patients roughly half a year after they received the COVID-19 vaccine.

Researchers "analyzed blood samples from 46 healthy, mostly young or middle-aged adults after receipt of the two doses and again six months after the second dose," Reuters reported this week.

The study indicated that "vaccination with the Pfizer-BioNtech vaccine induces high levels of neutralizing antibodies against the original vaccine strain, but these levels drop by nearly 10-fold by seven months," two of the researchers told the news wire.