Micro 22. Pathogen Group 1. Gas gangrene

Domain classification

Bacteria

Diagnostic methods

Gas and foul smells from wound, wound culture

Gram stain, morphology

Gram positive, bacillus

Distinguish features

Rapid and extensive neurosis of muscle accompanied by gas formation and systemic toxicity, it occurs when bacteria include healthy muscle or bacteria tissue. Foul smell.

Signs and symptoms

Skin around wound being pale, bronze or deep red, tender to touch, large blisters around wound. Blisters leaking bloody, brown, or amber colored fluid

Reservoir

Spores in soil, gastrointestinal tract

Geographic occurence

World Wide

Spores?

Yes, endospores

Scientific name

clostridium perfringens

Pathogenic properties

grows in dead and poorly oxygenated tissue, released alpha-toxin that kills cells

Motility ?

no

contagious?

no

Oxygen Requirements

obligately anaerobic

High Risk Individuals

people with exposed skins with reduced oxygen supply

prokaryotic or eukaryotic

prokaryotic

Preventive Measures

propper food handling, oxygen exposure surgical removal, tissue amputation

serious complications

sepsis, toximia, shock

parts of host body infected

skin and muscle tissue is infected

methods of transmission

spores from soil enter deep wounds

period of illness

until it gets treated

incubation period

1-5 days

Portals of entry

deep wounds, surgical infections, improper abortions