Fig. 3

Alpha and beta diversities of the microbiome of Rickettsia-positive groups and Rickettsia-negative groups. a The number of operational taxonomic units (OTUs) and b Shannon index between the Rickettsia-positive (n = 16) and Rickettsia-negative (n = 21) groups. c Microbiome composition of Rickettsia-positive and Rickettsia-negative groups are shown by principal coordinate analysis (PCoA)