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[[File:anthrax.jpg|right|thumb|250px|<small><center> photomicrograph of Bacillus anthracis bacteria using Gram-stain technique. (CDC unknown, Wikimedia commons)</center></small>]]

[[File:Bacillus anthracis Gram.jpg|right|thumb|250px|<small><center> photomicrograph of ''Bacillus anthracis'' bacteria using Gram-stain technique. (CDC unknown, Wikimedia commons)</center></small>]]

==Overview==

==Overview==

''Bacillus anthracis'' is a species of ''[[Bacillus]]'' bacteria. ''B.anthracis'' is a saprophyte in soil. Its endospore formation allows persistence and spread as they survive decades in the soil. Infection usually occurs by ingestion of spores and penetration through damaged mucosa. Outbreaks occur in herbivore's grazing pastures contaminated by spores from buried carcases.

''Bacillus anthracis'' is a species of ''[[:Category:Bacillus species|Bacillus]]'' bacteria. ''B.anthracis'' is a saprophyte in soil. Its endospore formation allows persistence and spread as they survive decades in the soil. Infection usually occurs by ingestion of spores and penetration through damaged mucosa. Outbreaks occur in herbivore's grazing pastures contaminated by spores from buried carcases.

==Pathogenesis==

==Pathogenesis==

The capsule stains mauve with polychrome methylene blue in the MacFadyean's reaction. This can be used to identify anthrax in blood samples. Bacilli appear as chains of dark blue, square-ended rods surounded with the capsule.

The capsule stains mauve with polychrome methylene blue in the MacFadyean's reaction. This can be used to identify anthrax in blood samples. Bacilli appear as chains of dark blue, square-ended rods surounded with the capsule.

''Bacillus anthracis'' causes tissues to darken and swell due to oedema and necrosis. It causes capillary thrombosis, the leakage of fluid through damaged capillary endothelium. Systemic shock from circulatory collapse, [[Haemostasis - Pathology#Haemorrhagic Disease Due To Vascular Fragility|haemorrhagic disease]] and oedema lead to death of the animal. It causes severe systemic disease that can result in [[Septicaemia and Enteritis, Bacterial|enteritis]] and [[Peritonitis #In pigs|Peritonitis in pigs]].

''Bacillus anthracis'' causes tissues to darken and swell due to oedema and necrosis. It causes capillary thrombosis, the leakage of fluid through damaged capillary endothelium. Systemic shock from circulatory collapse, haemorrhagic disease and oedema lead to death of the animal. It causes severe systemic disease that can result in [[:Category:Intestine - Inflammatory Pathology by Cause|enteritis]] and [[Peritonitis #In pigs|peritonitis in pigs]].

[[Category:Bacillus_species]]

[[Category:Bacillus_species]]

[[Category:To_Do_-_AimeeHicks]]

 

[[Category:Expert_Review]]