“…The bibliometric analysis is one method for measuring the development of an area of study ( Flay, 1986 ; Milat et al, 2011 ), and it may be applied to explore, analyze, and summarize the formation of knowledge’s structure in the spatiotemporal dimensions. This approach, which has been used in a variety of domestic and international fields, offers a diverse perspective that traditional literature reviews and systematic reviews cannot ( Chen et al, 2014 ; Cesarano et al, 2021 ; Ma S. et al, 2021 ; Pan et al, 2021 ; Pasin and Pasin, 2021 ; Shi et al, 2021 ; Wu et al, 2021a ; Fu et al, 2022 ). Bibliometric analysis has been widely used in the field of microbial science, such as microbiome and COVID-19 ( Xavier-Santos et al, 2022 ), gut microbiota and host immune response ( Ni et al, 2022 ), gut microbiota and atherosclerosis ( Wang Y. et al, 2022 ), microbiome-gut-brain axis ( Wang H. et al, 2022 ), gut microbiota and heart failure ( Mu et al, 2022 ), gut microbiome and cancer ( Zyoud et al, 2022 ), the intestinal microbiome and inflammatory bowel disease ( Xu et al, 2022 ), gut microbiota and Parkinson’s disease ( Cabanillas-Lazo et al, 2022 ), and gut microbiota and depression ( Zhu et al, 2021 ).…”