Query: NC_015857:1809500 Brucella pinnipedialis B2/94 chromosome chromosome 1, complete
Lineage: Brucella pinnipedialis; Brucella; Brucellaceae; Rhizobiales; Proteobacteria; Bacteria
General Information: Brucella pinnipedialis has been isolated from seals, porpoises and other marine mammals. This organism can be isolated from skin, blood, spleen and lymph nodes although the pathogenesis of this organism has yet to be determined.
Subject: NC_006142:33268 Rickettsia typhi str. Wilmington, complete genome
Lineage: Rickettsia typhi; Rickettsia; Rickettsiaceae; Rickettsiales; Proteobacteria; Bacteria
General Information: This genus, like other Rickettsial organisms such as Neorickettsia and Anaplasma, is composed of obligate intracellular pathogens. The latter is composed of two organisms, Rickettsia prowazekii and Rickettsia typhi. The bacteria are transmitted via an insect, usually a tick, to a host organism, in this case humans, where they target endothelial cells and sometimes macrophages. They attach via an adhesin, rickettsial outer membrane protein A, and are internalized where they persist as cytoplasmically free organisms. Transovarial transmission (from mother to offspring) occurs in the invertebrate host. Rickettsia typhi causes murine typhus and is an obligate intracellular pathogen that infects both the flea vector and hosts such as human, rat, and mouse. In the flea vector, the bacterium penetrates the gut epithelial barrier and is found in the feces which become infective.