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 ?
Blood cultures were positive after 9 hours, and subcultures grew with B.
Hence, the objectives of this study were (i) to establish Ganoderma infection via a newly developed Ganoderma artificial inoculation method and (ii) to determine the efficiency of in vivo interaction of Trichoderma harzianum and/or B.
HPLC technique was used to determine the purity of the PHA produced by B.
For the LOD, the concentration (ng/[micro]L) of both genomic and plasmid DNA from the two strains of B.
The assay uses two sets of primers, one of which was designed to detect both B.
Apos a incubacao a 30[degrees] C por 18 a 24 horas, foi feita a contagem e isolamento de exemplares tipicos de B.
Initial enrichment was made in Tryptone soy broth (TSB) (Hi-Media, Mumbai, India) supplemented with 500U/ ml of polymyxin B at 37[degrees]C for 24-48 h followed by streaking on B.
stearothermophilus is commonly found on biological indicator test strips to verify steam or chemical vapor sterilization of resistant microorganisms, whereas B.