Alterations in the oral microbiome of individuals with a healthy oral environment following COVID-19 vaccination. Bacteria

Vaccination is a crucial strategy in the fight against COVID-19, and its application is increasing worldwide. There is a possibility of alterations in the oral and intestinal microbiomes of vaccinated individuals. Alterations in the microbiome might provide some beneficial information for understanding the health conditions of vaccinated individuals. Changes in the oral microbiome directly affect oral health conditions, in addition to modifying susceptibility to COVID-19. To investigate the oral microbiome, potential environmental factors that might affect the oral microbiome composition should be excluded as much as possible. In this study, we thus collected saliva from participants working as dental professionals after confirming their oral health conditions and their systemic health, and observed alterations in their oral microbiome following COVID-19 vaccination.