Pseudomonas spp.
(aeruginosa, stutzeri, fluorescens, putida)
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Morphology | Motile gram-negative aerobic bacteria, plump-shaped rods, with polar flagella, non-spore forming and can produce pigments. |
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Disease
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Pneumonia, bacteremia, wound infections, urinary tract infections, swimmer's ear, eye infections related to use of contact lenses. |
Zoonosis
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None reported. |
Host Range | Humans, animals (wild, domestic, livestock), and plants (flora and fungi). |
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Modes of Transmission
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Direct contact by inhalation of aerosols and wounds, aspiration of contaminated water
(tap or distilled). Indirectly by contact of mucous membranes with discharges from
infected conjunctivae or infected respiratory secretions.
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Signs and Symptoms |
Conjunctivitis, Upper Respiratory Infections, Pneumonia, Urinary Tract Infections, Wound Infection. |
Infectious Dose | Unknown for humans. Studies with larvae models have found the infectious dose for the insects to be high. |
Incubation Period | Varies according to infection, eye infection can appear 24 – 72 hours after infection. |
Prophylaxis |
Antibiotic Prophylaxis.
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Vaccines |
None available.
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Treatment | Aggressive antibiotic therapy for severe infections; Local application of antibiotic ointment or drops for skin or eye infections. Pseudomonas aeruginosa is intrinsically resistant to many common antibiotics. |
Surveillance |
Monitor for symptoms. Diagnosis can be confirmed by microbial culture and PCR.
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MSU Requirements
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Report any exposures.
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Laboratory Acquired Infections (LAIs) | None have been reported. However, this is an opportunistic pathogen and there is the
possibility of severe to fatal infection in the immunocompromised.
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Sources |
Clinical Specimen: Respiratory secretions, wound exudates, blood, urine. Environmental
Reservoir: Water, infected solutions (IV, disinfectants, soap). Cultures, frozen stocks,
other samples described in IBC protocol.
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BMBL
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https://www.cdc.gov/labs/bmbl/?CDC_AAref_Val=https://www.cdc.gov/labs/BMBL.html |
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NIH Guidelines
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CDC
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https://www.cdc.gov/hai/organisms/pseudomonas.html |
Canada PSDS
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http://www.phac-aspc.gc.ca/lab-bio/res/psds-ftss/index-eng.php |
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 infected.
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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 |
Susceptible to 1:10 bleach:water, 70 % ethanol and 2 % gluteraldehyde, 2 % formaldehyde.
Alcohol contained disinfectants recommended for resistant strains.
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Inactivation |
moist heat (15 minutes at 121oC) and dry heat (1 hour at 160-170oC).
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Survival Outside Host
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Unknown.
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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. |