Clostridium Perfringens
Morphology |
A gram-positive rod that is anaerobic, motile, capable of producing spores, and produces
many different toxins.
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Disease |
Food poisoning (Type C), Gas Gangrene, cellulitis, enteritis necroticans and CNS diseases. |
Zoonosis |
Yes; Type A foodborne disease and Type C infections can be transmitted from animals to humans. |
Host Range |
Humans and animals.
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Modes of Transmission |
Food-borne illness acquired by ingestion.
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Signs and Symptoms |
Food poisoning: Watery diarrhea, nausea, and abdominal pain. Gas Gangrene; breakdown
of muscle tissue. Severe pain, edema, tenderness, and pallor, followed by discoloration
and hemorrhagic bullae, and production of gas at the site of wound.
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Infectious Dose |
Food poisoning: 100 million
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Incubation Period |
Food poisoning: 8 to 24 hours Gas Gangrene: 1 to 4 days
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Prophylaxis | None available. |
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Vaccines | None available. |
Treatment |
Food poisoning: Self-limiting disease. Therapy is mainly supportive. Gas Gangrene: removal of all devitalized tissue in conjunction with antibiotic therapy with a combination of penicillin and clindamycin or tetracycline. |
Surveillance |
Clinical symptoms.
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MSU Requirements | Report any exposures |
Laboratory Acquired Infections (LAIs) | None of been reported to date. |
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Sources |
Feces, food, blood, bowel contents or tissue. Cultures, frozen stocks, other samples
described in IBC protocol.
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Risk Group 2
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Agents that are associated with human disease which is rarely serious and for which preventive or therapeutic interventions are often available. |
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BSL2
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For all procedures involving suspected or known infectious specimen or cultures.
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ABSL2
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For all procedures utilizing infected animals.
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Small
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Notify others working in the lab. Remove PPE and don new PPE. Cover area of the spill
with absorbent material and add fresh 1:10 bleach:water. Allow 20 munutes (or as directed)
of contact time. After 20 minutes, cleanup and dispose of materials.
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Large
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Mucous membrane
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Flush eyes, mouth, or nose for 5 minutes at eyewash station.
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Other Exposures
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Wash area with soap and water for 5 minutes.
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Reporting |
Immediately report incident to supervisor, complete a First Report of Injury form, and submit to Safety and Risk Management.
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Medical Follow-up
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During business hours: Bridger Occupational Health 3406 Laramie Drive. Weekdays 8am -6pm. Weekends 9am-5pm
After business hours: Bozeman Deaconess Hospital Emergency Room 915 Highland Blvd Bozeman, MT |
Disinfection |
Spores are fairly resistant; moderate susceptibility to 1:10 bleach:water; susceptible
to high level disinfectants (>2 % gluteraldehyde) with prolonged contact time, accelerated
hydrogen peroxide
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Inactivation |
Spores are inactivated by moist heat (15 minutes at 121 C) and dry heat (1 hour at
160-170 C).
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Survival Outside Host |
Spores can survive for long periods outside of host.
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Minimum PPE Requirements
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Lab coat, disposable gloves, safety glasses, closed toed shoes, long pants
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Additional Precautions
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Additioanl PPE may be required depending on lab specific SOPs and IBC Protocol. |