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Diarrhea in neonates. K88: swine; K99: cattle Enterotoxic E. coli
Do not invade tissue; heat labile or stable; exotoxins are absorbed => more cAMP => more water and Cl- secretion ETEC
cause septicemia and bacteremia in neonatal animals. enteroinvasive E. coli (EIEC
Penetrate epithelium, endotoxins cause damage. Enteroinvasive E. coli
Edema disease in pigs. O157:H7 in greyhounds and humans (Hemolytic uremia) Enterohemorrhagic E. coli
Attach to microvilli and cause effacement or destruction; NOT invasive. (NO enterotoxins) Enteropathogenic E. coli
a short gram-negative rod with petritrouchous flagella. Escherichia coli
It is motile and non spore-forming and ferments lactose and glucose. Escherichia coli
gives E. coli a metallic green appearance. EMB agar
Somatic/Lipopolysaccharide O
Flagella H
Capsular K
Pili/Fimbrae F
almost always associated with pigs. K88 (also called F4) and 987p (also called F6)
Diarrhea in calves is often caused by K99
All enterotoxins are exotoxins.
The virulence factors of enterotoxic E. coli are exotoxins and pili antigens
The exotoxins are absorbed into the epithelial cells.
cause effacement or degeneration of microvili without entering the cell. Enteropathogenic E.
cause septicemia and bacteremia in neonatal animals. enteroinvasive E. coli
Acute colisepticemia usually does NOT cause diarrhea or fever
Bovine mastitis caused by E. coli rapidly reduces milk production
causes 70% of pyometra cases in bitches. Escherichia coli
Pigs are quite susceptible to what until they are about 14 weeks old. E coli
Post-weaning colibacillosis in pigs is almost always caused by K88
Edema disease in pigs is caused by EHEC or VTEC
The symptoms are muscle tremors, staggering gait, facial edema (especially eyelids) and posterior paralysis before death. Edema disease
Birds of any age can get acute septicemia caused by. E coli
Arthritis may develop in poultry after septicemic infection
can cause E. coli poisoning in humans. Raw hamburgers
Hemolytic uremia syndrome in humans is caused by O157:H7
Greyhounds can get “Alabama rot” which is caused by E. coli O:157:H7
Bacteremia in humans is occasionally caused by Enterobacter cloacae
Mastitis can be caused by Enterobacter aerogenes
is normally found in the soil Citrobacter
has a large capsule, is not hemolytic and can cause mastitis in cattle, cervicitis and metritis in mares, and urinary tract infections. Klebsiella
does not ferment lactose, is highly motile and non-hemolytic Proteus
frequently causes urinary tract infections in cats and dogs. Proteus
causes bubonic plague. Yersenia pestus
Salmonella Typhiurium No host preference
Salmonella Choleraesuis pigs
Salmonella Pullorum poultry
Salmonella Gallinarum poultry
Salmonella Enteritidis No host preference
Salmonella Dublin cattle and humans
Salmonella Typhi Humans
describes salmonella infections caused by non-host-adapted serotypes. Paratyphoid
of flagellar antigen is referred to as H-O variation
The differences in capsule thickness (quantitative antigenic changes involving Vi antigens) are called V-W variants
A strain changes from smooth to rough (S-R variation) when the is gradually lost to expose the core polysaccharide. O antigen
is destroyed by boiling. flagellar antigen
Typhoid fever is caused by human-adapted serovar
are non-motile and paratyphoids are motile Pullorum and Gallinarum
causes bacillary white diarrhea in poultry Salmonella Pullorum
Fowl typhoid is caused by Salmonella Gallinarum
Organism identification is the only way to distinguish fowl typhoid from pullorum
produces green diarrhea and the wattles and combs have a purple discoloration. Fowl typhoid
is usually caused by Salmonella Dublin and Salmonella Typhimurium Bovine salmonellosis
Calves 2-6 weeks are most susceptible Salmonella Typhimurium
is more likely to produce the carrier state in cattle Salmonella Dublin
Cattle with what have fever, diarrhea (brown or green, sometimes bloody) and sometimes get arthritis, pneumonia, or encephalitis. salmonellosis
is the most common serovar in pigs. Salmonella Choleraesuis
are often carriers of salmonella Turtles
Created by: alljacks



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