Flashcards in Staphylococcus Deck (57):
What is the shape of Staphoylococcus?
Cocci clusters (grapes)
What is the oxygen requirement of Staph?
What is the mode of locomotion of Staph?
Does Staph form spores?
What is the catalase state of Staph?
Is Staph a commensal organism?
Where is Staph naturally inhabiting the body?
Skin and mucous membranes (20% in nose)
What is the typical infections of a Staph bacteria?
Suppurative infections w/pus-filled lesions
Virulence factor that assists in tissue colonization
Virulence factor that assists in tissue destruction
Hemolysins, enterotoxins, and toxic shock syndrome toxins
Virulence factors that assist in immune evasion
Protein A, leukocidin, coagulase
Part of the antibody to which the bacteria binds
How can you tell if a coagulase test is positive?
Clot formation in test tube
Which Staph. is coagulase-negative?
Clinical infections of S. aureus in cattle
Bovine staph. mastitis
Clinical infections of S. aureus in sheep and goats
mastitis, tic, pyaemia, dermatitis
Clinical infections of S. aureus in horses
Botryomycosis of spermatic cord
Clinical infections of S. aureus in poultry
Ulcerative pododermatitis (bumblefoot)
Clinical infections of S. aureus in dogs and cats
Most common Staph infection in small animals
Clinical infection of S. pseudintermedius in dogs
Pyoderma, otitis externa, endometritis, cystitis
Clinical infection of S. pseudintermedius in cats
Various pyogenic conditions
Clinical infection of S. hyicus
Greasy pig disease
What species does S. hyicus infect
Contagious mastitis in cattle
Bovine staphylococcal mastitis
Consequences of contagious mastitis in cattle
Decreased milk quality and production losses
Source of infection of contagious mastitis in cattle
Infected mammary gland of another cow in the herd
Host predisposition for contagious mastitis in cattle
Impaired phagocyte function
Disease associated with production of toxin that causes vasoconstriction in the udder, venous thrombosis, and local edema
Peracute gangrenous mastitis
Severe swelling of affected gland, purulent secretion with clots, extensive fibrosis
Milk production decreases over time due to prolonged inflammatory response that leads to fibrosis and narrowing of the mammary ducts
Chronic subclinical mastitis
Prevention of contagious mastitis
Good hygiene and milking technique
Treatment of contagious mastitis
Quarantine of infected cows, cull chronic cows, antimicrobial treatment
What antimicrobials can you use to treat contagious mastitis in cattle?f
Pus filled granulomas in the skin
Chronic granulomatous suppurative disorder with formation of micro-abscessation
Result of post-castration complications in horses
Treatment of botryomycosis
Long-term antibacterial treatment and repeated surgical removal of affected tissue
Prevention of botryomycosis
Hygiene during surgical procedures and proper wound care
Local chronic pododermatitis on the foot of all types of birds
Sometimes leads to staphylococcal arthritis and septicemia in turkeys
Prevention of bumblefoot
Causes local skin diseases in dogs and cats
S. pseudintermedius is usually a __________ infection associated with parasites, food allergies, or other skin diseases
Treatment of S. pseudintermedius
Identification and treatment of underlying problems
Highly contagious exudative epidermitis in suckling and weaned pigs
How old are pigs affected by S. hyicus?
Up to 3 months old
What is the mortality rate of untreated pigs infected with S. hyicus?
How can you isolate S. hyicus?
Vaginal mucosa and skin of healthy cows
What is the mode of infection of S. hyicus?
Per cutaneous (through minor abrasions)
Treatment of S. hyicus
Early systemic antibiotic therapy plus topical treatment
Prevention of S. hyicus
Quarantine infected pigs, good
What is TSS caused by?
Effect of superantigens entering the bloodstream
Causes an exaggerated immune reaction
What causes food poisoning?
Which Staph species produces enterotoxins when it multiplies?