This is a list of bacteria that are significant in medicine. It is not intended as an exhaustive list of all bacterial species: that should be at List of bacteria. For viruses, see list of viruses. A Acetobacter aurantius Acinetobacter baumannii Actinomyces israelii Agrobacterium radiobacter Agrobacterium tumefaciens Anaplasma Anaplasma phagocytophilum Azorhizobium caulinodans Azotobacter vinelandii viridans streptococci B Bacillus Bacillus anthracis Bacillus brevis Bacillus cereus Bacillus fusiformis Bacillus licheniformis Bacillus megaterium Bacillus mycoides Bacillus stearothermophilus Bacillus subtilis Bacillus thuringiensis Bacteroides Bacteroides fragilis Bacteroides gingivalis Bacteroides melaninogenicus (now known as Prevotella melaninogenica) Bartonella Bartonella henselae Bartonella quintana Bordetella Bordetella bronchiseptica Bordetella pertussis Borrelia burgdorferi Brucella Brucella abortus Brucella melitensis Brucella suis Burkholderia Burkholderia mallei Burkholderia pseudomallei Burkholderia cepacia C Calymmatobacterium granulomatis Campylobacter Campylobacter coli Campylobacter fetus Campylobacter jejuni Campylobacter pylori Chlamydia Chlamydia trachomatis Chlamydophila Chlamydophila pneumoniae (previously called Chlamydia pneumoniae) Chlamydophila psittaci (previously called Chlamydia psittaci) Clostridium Clostridium botulinum Clostridium difficile Clostridium perfringens (previously called Clostridium welchii) Clostridium tetani Corynebacterium Corynebacterium diphtheriae Corynebacterium fusiforme Coxiella burnetii E Ehrlichia chaffeensis Ehrlichia ewingii Eikenella corrodens Enterobacter cloacae Enterococcus Enterococcus avium Enterococcus durans Enterococcus faecalis Enterococcus faecium Enterococcus gallinarum Enterococcus maloratus Escherichia coli F Fusobacterium necrophorum Fusobacterium nucleatum G Gardnerella vaginalis H Haemophilus Haemophilus ducreyi Haemophilus influenzae Haemophilus parainfluenzae Haemophilus pertussis Haemophilus vaginalis Helicobacter pylori K Klebsiella pneumoniae L Lactobacillus Lactobacillus acidophilus Lactobacillus bulgaricus Lactobacillus casei Lactococcus lactis Legionella pneumophila Leptospira interrogans Leptospira noguchii Listeria monocytogenes M Methanobacterium extroquens Microbacterium multiforme Micrococcus luteus Moraxella catarrhalis Mycobacterium Mycobacterium avium Mycobacterium bovis Mycobacterium diphtheriae Mycobacterium intracellulare Mycobacterium leprae Mycobacterium lepraemurium Mycobacterium phlei Mycobacterium smegmatis Mycobacterium tuberculosis Mycoplasma Mycoplasma fermentans Mycoplasma genitalium Mycoplasma hominis Mycoplasma penetrans Mycoplasma pneumoniae Mycoplasma mexican N Neisseria Neisseria gonorrhoeae Neisseria meningitidis P Pasteurella Pasteurella multocida Pasteurella tularensis Peptostreptococcus Porphyromonas gingivalis Prevotella melaninogenica (previously called Bacteroides melaninogenicus) Pseudomonas aeruginosa R Rhizobium radiobacter Rickettsia Rickettsia prowazekii Rickettsia psittaci Rickettsia quintana Rickettsia rickettsii Rickettsia trachomae Rochalimaea Rochalimaea henselae Rochalimaea quintana Rothia dentocariosa S Salmonella Salmonella enteritidis Salmonella typhi Salmonella typhimurium Serratia marcescens Shigella dysenteriae Spirillum volutans Staphylococcus Staphylococcus aureus Staphylococcus epidermidis Stenotrophomonas maltophilia Streptococcus Streptococcus agalactiae Streptococcus avium Streptococcus bovis Streptococcus cricetus Streptococcus faceium Streptococcus faecalis Streptococcus ferus Streptococcus gallinarum Streptococcus lactis Streptococcus mitior Streptococcus mitis Streptococcus mutans Streptococcus oralis Streptococcus pneumoniae Streptococcus pyogenes Streptococcus rattus Streptococcus salivarius Streptococcus sanguis Streptococcus sobrinus T Treponema U Ureaplasma urealyticum V VibrioVibrio choleraeVibrio commaVibrio parahaemolyticusVibrio vulnificusWWolbachia Y YersiniaYersinia enterocoliticaYersinia pestisYersinia pseudotuberculosis'' See also List of bacterial orders List of