Coccobacillus: Difference between revisions
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[[Image:Coxiella burnetii 01.JPG|thumb|[[Coxiella burnetii]]]] |
[[Image:Coxiella burnetii 01.JPG|thumb|[[Coxiella burnetii]]]] |
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A '''coccobacillus''' (plural ''coccobacilli'') is a type of [[bacterium]] with a shape that is intermediate between [[cocci]](spherical bacteria) and [[bacilli]] (rod-shaped bacteria).<ref name="urlDorlands Medical Dictionary:coccobacillus">{{cite web |url=http://www.mercksource.com/pp/us/cns/cns_hl_dorlands_split.jsp?pg=/ppdocs/us/common/dorlands/dorland/two/000022330.htm |title=Dorlands Medical Dictionary:coccobacillus |work= |accessdate=}}</ref> Coccobacilli are therefore in essence very short rods which may be mistaken for cocci. ''[[Haemophilus influenzae]]'', ''[[Gardnerella vaginalis, former Haemophilus vaginalis]]'' and ''[[Chlamydia trachomatis]]'' are coccobacilli. ''[[Aggregatibacter actinomycetemcomitans]]'' is a gram-negative coccobacillus that is prevalent in subgingival plaques. ''[[Acinetobacter]]'' strains may grow on solid media as coccobacilli. ''[[Bordetella pertussis]]'' is a gram-negative coccobacillus responsible for causing [[whooping cough]]. |
A '''coccobacillus''' (plural ''coccobacilli'') is a type of [[bacterium]] with a shape that is intermediate between [[cocci]] (spherical bacteria) and [[bacilli]] (rod-shaped bacteria).<ref name="urlDorlands Medical Dictionary:coccobacillus">{{cite web |url=http://www.mercksource.com/pp/us/cns/cns_hl_dorlands_split.jsp?pg=/ppdocs/us/common/dorlands/dorland/two/000022330.htm |title=Dorlands Medical Dictionary:coccobacillus |work= |accessdate=}}</ref> Coccobacilli are therefore in essence very short rods which may be mistaken for cocci. ''[[Haemophilus influenzae]]'', ''[[Gardnerella vaginalis, former Haemophilus vaginalis]]'' and ''[[Chlamydia trachomatis]]'' are coccobacilli. ''[[Aggregatibacter actinomycetemcomitans]]'' is a gram-negative coccobacillus that is prevalent in subgingival plaques. ''[[Acinetobacter]]'' strains may grow on solid media as coccobacilli. ''[[Bordetella pertussis]]'' is a gram-negative coccobacillus responsible for causing [[whooping cough]]. |
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''[[Coxiella burnetti]]'' is also a coccobacillus.<ref name="urlpersistent rickettsial disease">{{cite web |url=http://www.addl.purdue.edu/newsletters/2004/spring/qfever.htm |title=persistent rickettsial disease |work= |accessdate=}}</ref> |
''[[Coxiella burnetti]]'' is also a coccobacillus.<ref name="urlpersistent rickettsial disease">{{cite web |url=http://www.addl.purdue.edu/newsletters/2004/spring/qfever.htm |title=persistent rickettsial disease |work= |accessdate=}}</ref> |
Revision as of 18:45, 25 March 2013
A coccobacillus (plural coccobacilli) is a type of bacterium with a shape that is intermediate between cocci (spherical bacteria) and bacilli (rod-shaped bacteria).[1] Coccobacilli are therefore in essence very short rods which may be mistaken for cocci. Haemophilus influenzae, Gardnerella vaginalis, former Haemophilus vaginalis and Chlamydia trachomatis are coccobacilli. Aggregatibacter actinomycetemcomitans is a gram-negative coccobacillus that is prevalent in subgingival plaques. Acinetobacter strains may grow on solid media as coccobacilli. Bordetella pertussis is a gram-negative coccobacillus responsible for causing whooping cough.
Coxiella burnetti is also a coccobacillus.[2]
Bacteria from the Brucellae genus are medically important coccobacilli that cause brucellosis.
Haemophilus ducreyi is another medically important gram-negative coccobacillus and is observed in sexually transmitted disease, chancroid, of third-world countries.[3]
References
- ^ "Dorlands Medical Dictionary:coccobacillus".
- ^ "persistent rickettsial disease".
- ^ Schaetchter's Mechanisms of Microbial Disease 4th Edition. ISBN 0-7817-5342-2