Study of antibodies produced in saliva after Pfizer COVID vaccine shows both importance of second vaccine dose and updating vaccines to combat new variants of concern

(European Society of Clinical Microbiology and Infectious Diseases) New research presented at this year's European Congress of Clinical Microbiology & Infectious Diseases (ECCMID) shows the importance of receiving the second dose of a COVID-19 vaccine and also the need to constantly review and update vaccines to deal with new variants of concern.