Gene Editing Higher contact among vaccinated people may negatively influence vaccine effectiveness Posted on May 2, 2022 by Editorial Staff In a new study, researchers reported that contact among vaccinated people could influence the effectiveness of COVID-19 vaccines. Share on FacebookTweetFollow us Editorial Staff Neutralizing antibodies produced following COVID-19 BNT162b2 vaccine found to activate complement cascade Study estimates the elevated risks of COVID-19 breakthrough infection and hospitalization in fully vaccinated individuals with comorbidities