Bacillus cereus


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Ba·cil·lus ce·re·us

a bacterial species that causes emetic and diarrheal types of food poisoning in humans; can cause infections in humans and other mammals and a highly destructive infection of the traumatized eye.

Bacillus cereus

a species of bacilli found in the soil. It causes food poisoning (an emetic type and a diarrheal type) by the formation of an enterotoxin in contaminated foods. The symptoms are similar to those of Staphylococcus food poisoning. It can also cause infections, such as ocular infections, and septicemia.

Bacillus cereus

A ubiquitous, aerobic spore-forming, gram-positive non-anthrax bacillus.
 
Epidemiology
B cereus causes foodborne outbreaks of gastroenteritis in Europe, but not in the US. Of the two clinical forms of disease, the diarrhoeal form is more common and has a 24-hour incubation period; the emetic (vomiting) form has a shorter (1–6-hour) incubation period.
 
Clinical findings
• Diarrhoeal form—Epidemic gastroenteritis, diarrhoea.
• Emetic form—Watery diarrhoea, abdominal cramping, fever.

Management
Because symptoms are mild, self-limited and mediated by an enterotoxin, antibiotics are not indicated.
 
Pathogenesis
B cereus is found in uncooked rice; the heat-resistant spores survive boiling, and germinate when uncooked rice is left unrefrigerated. Each type of gastroenteritis is caused by a different enterotoxin.

Ba·cil·lus ce·re·us

(bă-sil'ŭs sĕr'ē-ŭs)
A species that causes an emetic type and a diarrheal type of food poisoning in humans and can cause infections in humans and other mammals.

Bacillus

a genus of bacteria that are gram-positive, aerobic, spore-forming rods. With the exception of B. anthracis and the occasional wound contamination and bovine mastitis caused by B. cereus, the organisms are largely saprophytic and do not cause disease. However, they may invade devitalized tissue. They do have importance in the area of food preservation.

Bacillus actinoides
streptobacillusmoniliformis.
Bacillus aneurinolyticus, Bacillus thiaminolyticus
are thiaminase-producing bacteria which may proliferate in the rumen and contribute to the cerebral lesions in carbohydrate engorgement and polioencephalomalacia in cattle.
Bacillus anthracis
characterized by its capacity to form spores when exposed to the air and to survive for long periods in soil and other inert materials. Has a characteristic appearance with McFadyean's stain. Causes anthrax in all species.
Bacillus brevis
the source of tyrothricin.
Bacillus cereus
a species causing food poisoning, occasional cases of septicemia and bovine mastitis and abortion.
Bacillus circulans, Bacillus coagulans, Bacillus stearothermophilus
very heat-resistant bacteria which cause fermentation of cereals in canned meat foods. They cause souring but no gas production so that the can does not bulge. Called also flat sour. B. stearothermophilus spores are used to test efficacy of autoclaves.
Bacillus larvae
the cause of American foulbrood in honeybees.
Bacillus licheniformis
reported as a cause of abortion in cattle, sheep and pigs, and also isolated from suppurative lesions of horses and cattle.
Bacillus piliformis
the previous name of clostridiumpiliforme, the cause of tyzzer's disease.
Bacillus polymyxa (Bacillus aerosporus)
strains of this organism are the source of the antibiotic polymyxin.
Bacillus subtilis
a common saprophytic soil and water form, often occurring as a laboratory contaminant, and rarely, in apparently causal relation to pathological processes, such as conjunctivitis.
References in periodicals archive ?
If cooked foods are to be cooled, the trade should adopt measures to shorten the required cooling time to restrict the growth of Bacillus cereus and Clostridium perfringens in heat treated food.
Antibacterial activity of Test substance 4 was nearly equal to standard against Aeromonas hydrophila, Klebsiella pneumoniae, Salmonella typhimurium, Bacillus cereus and Vibrio cholera.
mentioned a significant account of mutations in 16S rRNA gene, however, the case may not be consistent with all the bacterial species, as was evident by studies on members of Bacillus cereus group.
2) CO = control diet, without probiotic; PP = diet with Pichia pastoris; SB = diet with Saccharomyces boulardii; BT = diet with Bacillus cereus var.
Several diners got sick as a result of a Bacillus cereus outbreak triggered by eating a starchy dessert.
Opinion of the scientific panel on biological hazards on Bacillus cereus and other Bacillus spp.
In a case of minimally-processed fluted pumpkin leaves for its juice, Bacillus cereus and subtilis may pose some health hazards if ingested in sufficient quantity to cause a poisoning as the case may be when the juice is not consumed immediately after preparation.
The ubiquitous bacterium Bacillus cereus found in soils, fresh and marine waters, dust, and intestinal systems of many insects has usually been linked to food poisoning yet has also caused a variety of serious infections [1-5].
Germination and proliferation of emetic Bacillus cereus sensu lato strains in milk.
1] de Bacillus cereus (secuenciada por MACROGEN), aislada de aguas residuales de curtiembres, la cual presento una alta capacidad biotransformadora de Cr (VI) en medio LB, bajo condiciones aerobicas y cercanas a la neutralidad.

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