Streptococcus

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- Large genus

-GPCOC pairs or chains

-Facultative Anaerobes

-Normal Flora Species

 -Mucous Membrane of Resp, GI, and digestive tracts

-Pathogenic species= Pyogenic infections

(Cause PUS!)

1.Hemolysis-

Alpha-Incomplete lysis of RBC greenish brown

Beta-Complete lysis of RBC-Clear

Gamma-No lysis of RBC-No change

2. Lancefield groups (a,b,c ext.)

Strep pyogenes-Group A

Strep. agalactie-Group B

Strep equi.-Group C

Strep. Dysgalactiae-Group C

Strep. zoo epidemicus-Group C

Strep.Canis- Group G

Bacterial characteristics: Beta Hemolytic

group A-catalase neg.

Disease names-

-Strept throat

-scarlet fever

-rheumatic fever

-Bovine mastitis

Species affected: Humans and cattle

spread-unpasterurized milk

-Beta Hemolytic

-Group B

-Catalase negative

CAMP positive

Cause-

-pneumonia

-meningitis

-septicemia

-contagious mastitis in cattle

-mammary glands permenet damage

Species-Cattle and neonatal humans

prevention- Can scan milk,cull infected cattle and test preg. woman

-Beta Hemolytic

-Group C

-Catalyse Neg.

-Causes-Equine Strangles

-affects horses

-Englarges lymphnodes

-treat by draining abscess

Prevention- Immunization by bacterin

-affects variety of animals

-enters through wound or infections

-Causes Genital infections

-primary cause of reproductive tract infections in horse

-Also causes mastitis

-Minor enviormental cause of bovine mastitis

-Beta hemolytic

-Group G

-Catalase neg.

-Causes wound infections in dogs

-Affects dogs

-causes wound and skin infections and UTI

-Alpha hemolytic

- No group

-Very anitbiotic resistant

-Causes

Pneumoccocal Pneumonia-primates

pneumonia-G. pigs and dogs

-most common in primates

-bacterial pneumonia in humans

-Alpha hemolytic

-Group D R and S

-primarly affects Pigs

-causes Meningitis, septicemia,pneumonia and arthritis

-Gamma hemolytic

-Group D

-Causes intestinal strep(normal flora)

-Nosocomial infection in humans, oportunistic, (UTI,Wounds)

-rare cause of UTI in animals

- Large genus

- GPCOC in Clusters

- Facultative anearobes and aerobes

-ubiquitous

-resistance to drying, disinfectants, and antibiotics

-problems in hospital with nosocomial infections

enzyme that destroys lactamase

-Causes pyogenic infections

-produces enzyme that facultate to attatch to skin and mucous membranes ( tissue invasion)

-Beta Hemolytic

-Double zone "aura"

-Beta Lactamase Producer

-catalase pos

-coagulase positive

-affects humans and many animal species

-Causes

-Food poisioning in humans-

-Contagious bovine mastitis

-Skin infection

-Surgical incisions,wounds,laceration

-otitis

-GU infections

-Osteomyelitis

-Open fracture

Arthritis

-Bacteremia

-Most common in dogs

-causes mastitis

- skin,wounds, surgical incisions

-GU infections

-Osteomyelitis

-Arthritis

-Bacteremia

-Gamma hemolytic

-Catalase pos.

-Coagulase Pos.

-causes exudative epidermitis

-piglets get yellow-greenish crust on snout head and ears

-very contagious-appear greasy

-affects pigs

-Normal Flora on skin

-usually non-pathogenic

-Micrococcus- usually non pathogenic

-Ubiquitous

Pos-Fizz-staphylococcus

Neg-No fizz-Streptococcus

-rabbit plasma is reagent

+-clot of jello like, staph is pathogenic

- -liquid no clot,staph is non-pathogenic

-Group B streptococcus[image]

Corynebacterium pseudotuberculosis

( GPRODS)

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- Reservoir-MM or skin of sheep and goats

-Causes-Caseous Lymphadenitis

-Ulcerative Lymphaganitis in horses and mules

-Common name is "Dryland Distemper" and "Pigeon Fever"

-Usually infected through wound in sheep,horse,goat and mule

-lymphnodes get huge and have abscess that have onion ring apperance

-abscess ulcerate and cause pus that is caseous or cottage cheese like

-Treatment- is difficult-

-sheep and goats should be culled

- Horses drain abscess on lymp nodes

-prevent by bacterin,control flies, and keeping wounds clean

-have pilli

-resevoir reproductive tract of male

-Causes bovine pyeloneprhitis

-Bacterial balanophothitis and vulvulitis in sheep

-Common name "pizzle rot"

-affects cattle and sheep

-passed by contact with infected urine or venerial

-Cattle-Pyogenic infection goes and destroys kidneys from urinary tract up,necrosis of mucous membranes,bloody purulent urine

-Sheep skin rash,use topical antibiotics

-Motile (flagella)

-Ubiquitous

-resistant to drying

-Replicates in refridgerator temps

-Survive for months in feces,silage,soil,pond water,milk,straw

-Reservoir-Soil Saprophyte ( decay organic material)

-Causes Listeriosis and circling disease

-affects humans, ruminants, rabbits,chinchilla,g pigs and dogs

-monogastric animals- i.e dogs ,cause internal organ abscess

-ruminants CNS failure,meningitis, usually fatal cause ataxia on one side, have abortions

-Humans get food poisoning symptoms, elderly and pregers woman can get meningitis adn effect CNS

pg 55