Helicobacter Pylori
Morphology | Gram negative microaerophilic curved rod. |
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Disease |
H. pylori are not invasive, but colonize in the human stomach's antral region and gastric mucosal surfaces where they release pathogenic proteins that induce cell injury and inflammation. This can result in clinical symptoms of infection, such as duodenal ulcer and gastric adenocarcinoma. Other common illnesses as a result of infection include gastroenteritis, diffuse antral gastritis, and gastric carcinoma. H. pylori is a Class I human carcinogen according to the World Health Organization. Infection can last a lifetime in the host if not properly treated, causing chronic gastritis which can lead to peptic gastroduodenal ulcer disease. |
Zoonosis | Yes, animals and humans and vice versa. |
Host Range | Humans and animals |
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Modes of Transmission | With more than 50 % of the world’s population infected, acquisition is likely to occur during childhood through fecal-oral, oral-oral contact, or during gastrointestinal tract transit disorders. |
Signs and Symptoms | Gastroenteritis and ulcers. Major symptoms are abdominal pain, heartburn, and nausea. |
Infectious Dose | unknown |
Incubation Period | unknown. |
Prophylaxis | None available. |
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Vaccines | None available. |
Treatment | Clarithromycin, amoxicillin, and tetracycline. |
Surveillance | Can be confirmed by culture, blood antigen detection, and urease detection |
MSU Requirements | Report any exposures. |
Laboratory Acquired Infections (LAIs) | 3 reported cases. |
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Sources | May be located in the oral cavity, gastrointestinal and hepatobiliary regions. Cultures, frozen stocks, other samples described in IBC protocol. |
Canadian MSDS: | http://www.phac-aspc.gc.ca/lab-bio/res/psds-ftss/index-eng.php |
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BMBL | https://www.cdc.gov/labs/BMBL.html |
CDC | https://stacks.cdc.gov/view/cdc/40603 |
NIH Guidelines | https://osp.od.nih.gov/wp-content/uploads/NIH_Guidelines.pdf |
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 | Susceptible to 1:10 bleach:water, 70 % ethanol |
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Inactivation | Inactivated by moist heat (15 minutes at 121oC) and dry heat (10 minutes at 70oC followed by 5 mintues at 95°C). |
Survival Outside Host | unknown |
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. |