title: Pathogens of Siphonaptera (fleas).
mesh_terms: D000818:Animals; D001419:Bacteria; D001634:Bibliographies as Topic; D056890:Eukaryota; D009348:Nematoda; D005423:Siphonaptera / Q000382:microbiology* / Q000469:parasitology*; D013045:Species Specificity