Surviving Norovirus - mmLearn.orgSurviving Norovirus Not Just a Cruise Ship Issue Maria Wellisch,...
Transcript of Surviving Norovirus - mmLearn.orgSurviving Norovirus Not Just a Cruise Ship Issue Maria Wellisch,...
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Surviving Norovirus Not Just a Cruise Ship Issue Maria Wellisch, RN, LFNA Vice President of Corporate Education Morningside Ministries
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How Prevalent is Norovirus
• 21 million cases
• 71,000 individuals hospitalized
• 91,000 emergency visits
• 800 deaths
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Foodborne Illness Outbreaks in the US
Norovirus is responsible for more than 50% of all outbreaks
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What is the cost of this virus?
The cost for healthcare and lost productivity is…
• $2 billion per year
• $1 billion per year
• $20 million per year
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$2 Billion Dollars
• This is healthcare and lost productivity • This does not measure the impact on the public
perception of your facility if you have an out break.
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Where is the most common setting for outbreaks?
• Healthcare facilities
• Cruise Ships
• Schools
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Why are long term care facilities so susceptible?
1. Communal / Social Activities
2. Congregate Meals
3. Dementia / hand washing
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Clinical Symptoms
1. Short incubation usually 12:48 hours after exposure
2. Common symptoms – acute onset of vomiting, watery, non-bloody diarrhea, abdominal cramping and nausea
3. Low-grade fever, headache and myalgia
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Asymptomology
30% of infected individuals do not develop any symptoms
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How long do symptoms last?
Usually 24-72 hours with most individuals recovering completely.
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Most Serious Outcomes
• Seen in children under 2 • Elderly
• Immunocompromised patients/residents » Severe Dehydration
» Hospitalization » Death
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Treatment
• No specific treatment for norovirus gastoenteritis • Dehydration is the most common complication
that requires treatment
• Antimotility agents and antiemetics are generally not recommended
• Antibiotics have NO value… …this is a virus
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Shedding • This virus is shed primarily in the stool • Vomitus is infectious
• Shedding peaks 4 days after exposure but can last up to 2-3 weeks
• Shedding can occur in non-symptomatic individuals
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Transmission • Person to person
» Fecal-oral
» Aerosolized Vomitus » Indirect – contaminated items / the environment
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Food
• Food handlers
• Contaminated Food (raspberries, oysters)
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Contaminated drinking or recreational water A well contaminated by a septic tank
Inadequate chlorination
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Transmission in Healthcare
• Direct contact with infected persons • Contaminated equipment
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Highly Infectious
When do we start to think about
an outbreak?
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Immediate Response • As soon as you see the 1st case (s) begin your
investigation and implement precautions
• Collect data on both ill and exposed residents / patients and staff. » Date of Onset
» Location
» Work Assignment » Test Results
» Outcomes
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Prior to lab results
Kaplan Criteria may be used to detect an outbreak
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Kaplan Criteria
• Vomiting in more than ½ of the symptomatic cases
• Mean incubation period of 24-48 hours
• Mean duration of illness is 12-60 hours
• No bacterial pathogen isolated in stool culture
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Lab Testing
• Check with your reference laboratory to determine what are the specimen requirements
• The (RT-PCR), reverse transciptase polymerase chain reaction
• The optimal specimen is a stool specimen while someone is acutely ill.
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REMEMBER There are many causes
for Gastroenteritis
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What to do if you have an outbreak
Notify health dept/public health – know your states requirements and jurisdictions
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Hand Washing
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Staff
• Exclude ill staff until at least 48 hours after diarrhea and vomiting have stopped
• No floating
• Non-essential staff excluded from affected areas
• Hand washing instructions
• Review contact precautions
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Residents
1. Start record for all symptomatic residents 2. Ill residents on contact precautions
3. No group activities
4. Do NOT move residents from affected to non-infected areas
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Residents
• Maintain the same staff-to-resident assignments • If resident transferred to hospital notify receiving
site of the outbreak
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Facility • Consider halting new admissions until outbreak is
over
• Review disinfectants and be sure you are using appropriate agents – Quaternary ammonium compounds are NOT effective against noroviruses
• Clean and disinfect more frequently
• Review cleaning and disinfection with housekeeping and all staff
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Facility (continued)
• Change mop heads • Do not share common medical equipment unless
disinfected between residents
• Change privacy curtains if soiled or after resident discharge
• Carpets and upholstery
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Facility (continued) • Soiled linens – maximum cycle length, appropriate
detergent
• Discontinue self-service or communal food/beverages until outbreak over
• Disposable dishes/utensils NOT required
• Post signs facility is experiencing increase in gastrointestinal illness
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Facility (continued)
• Be ready to discuss with media • Be prepared to explain what you are doing with
your family members
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Visitors/Volunteers
• Encourage hand washing • Postpone visits from children and elderly persons
• Ill family members and friends should be asked to avoid visitation
• Monitor Volunteers
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Lesson Learned