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![Page 1: The Massachusetts Department of Public Health and The Local Public Health Institute of Massachusetts September 2008 Be Prepared for Pandemic Flu: Key Tools.](https://reader035.fdocuments.us/reader035/viewer/2022070412/56649d775503460f94a5a07a/html5/thumbnails/1.jpg)
The Massachusetts Department of Public Health andThe Local Public Health Instituteof MassachusettsSeptember 2008
Be Prepared for Pandemic Flu: Key Tools for Local Public Health
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“Flu?If we but knew
The cause of flu
And whence it came and what to do,
I think that you
And we folks, too,
Would hardly get in such a stew.
Do you?”Illinois Health news, vol.
9, November 1918
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This training covers…
What is influenza?What is avian flu (H5N1)?What is an influenza pandemic?History of influenza pandemicsHow an influenza pandemic could affect communities in MassachusettsControl measures
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What is influenza?Respiratory infection
Spread by: Contact with respiratory secretions from an infected person who is coughing and sneezing
Incubation period: 1 to 5 days from exposure to onset of symptoms
Contagious period: Maximum at onset, but infectious for 1-2 days before symptoms and at least 4-5 days after onset of symptoms
In New England, flu season usually begins in Dec and peaks in Jan or Feb
Pandemic influenza may occur at any time of year, but conditions most favor rapid spread during regular flu season
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Influenza Virus Type A
Causes moderate
to severe illness Affects all age groups Infects humans and other species,
such as pigs and birds Associated with epidemics and
pandemics
A/Beijing/32/92 (H3N2)
Neuraminidase
Hemagglutinin
Type of nuclearmaterial
Virustype
Geographicorigin
Strainnumber
Year of isolation
Virus subtype
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What is avian influenza (AI)? An infection caused by influenza A virus occurring naturally among birds; infects gastrointestinal tractCan be highly or minimally pathogenic for domestic birdsWild birds carry the virus without getting sick
Can travel long distances (migration) and carry AI around the worldFecal transmission
First documented case of highly pathogenic AI in humans occurred in Hong Kong in 1997 (influenza A H5N1)
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Source : N Eng J Med 350;12:1243
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Flu virus is constantly changing
Drift: Minor change due to constant mutation
A reason why flu vaccine must be updated each year
Shift: Major change with new virus causing human infection
Pandemic potential
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What is a pandemic?
A sudden, widespread outbreak caused by a new strain of the influenza A virus.
Because the virus is new, virtually no one is immune - all exposed could get sick.
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Influenza pandemics...
Spread rapidly throughout the world
Result in an unusually high number of cases and deaths
Last 1 - 2 years; may have a second wave
Occurred in 1918, 1957, 1968
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1918 influenza pandemic
20 - 40 million or more died worldwide, 500,000 in U.S.
20% - 40% of population sick
Quick to kill, especially healthy
young adults
Most deadly outbreak of infectious disease ever
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Influenza and Pneumonia DeathsMassachusetts Cities, 1918-19
0
20
40
60
80
100
120
140
160
180
9/14
/18
9/21
/18
9/28
/18
10/5
/18
10/1
2/18
10/1
9/18
10/2
6/18
11/2
/18
11/9
/18
11/1
6/18
11/2
3/18
11/3
0/18
12/7
/18
12/1
4/18
12/2
1/18
12/2
8/18
1/4/
19
1/11
/19
1/18
/19
1/25
/19
2/1/
19
2/8/
19
2/15
/19
2/22
/19
3/1/
19
3/8/
19
3/15
/19
Week Ending
I&P
Dea
ths/
100,
000
po
pu
lati
on
BOSTON FALL RIVER LOWELL WORCESTER
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1957 and 1968 influenza pandemics
1957 Asian Flu (H2N2)
70,000 Americans died
1968 Hong Kong Flu (H3N2)
34,000 Americans died
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Avian influenza in humans (H5N1)
Hong Kong, 1997
Resulted in 18 human cases and 6 deaths
Most transmission from chickens to humans
Isolated instances of probable person-to-person transmission
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Avian influenza in humans (H5N1)H5N1 in humans in Hong Kong (2003), Viet Nam (2004)
Large H5N1 outbreak in poultry in Asia, 2003-05
Many opportunities for transmission to humans
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Laboratory-confirmed human cases of H5N1 since 12/2003 (as of 9.10.08)Country Total Cases Deaths
Turkey 12 4
Azerbaijan 8 5
Bangladesh 1 0
Nigeria 1 1
Iraq 3 2
Cambodia 7 7
Djibouti 1 0
Egypt 50 22
Indonesia 137 112
Thailand 25 17
Viet Nam 106 52
Lao 2 2
Pakistan 3 1
Myanmar 1 0
China 30 20
TOTAL 387 245
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Why are we concerned?H5N1 mutates rapidly
2004 virus more hardy than 1997 virus
Already resistant to some antivirals (amantadine)
Multiple strains circulating
Spreading via migratory birds who have little to no apparent illnessPoultry is an important source of income and protein for many in Asia
May be less likely to report H5N1 outbreaks in birds
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Why are we concerned about influenza?
Very short incubation period (1-4 days, typically 2 days)Infectious prior to symptomsSevere disease may occur in children and young adultsH5N1 has crossed the species barrier to infect humans
Population susceptibility to an H5N1-like pandemic virus would be universal
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Surveillance for H5N1 in Massachusetts
Immediately contact MDPH (617-983-6800) if patient:
• Hospitalized with x-ray-confirmed pneumonia or Acute Respiratory Distress Syndrome with no alternative diagnosis, AND
• Traveled to an area where birds have been affected by H5N1 within 10 days of symptom onset
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Control Measures in the Community
Pre-pandemic (isolated cases):Use airborne infection isolation including N-95 respiratorsHand hygiene
Pandemic (sustained human-to human transmission):Use droplet precautions Hand hygiene
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Planning and action needed nowDespite . . .
Expanded global and national surveillance Better healthcare, medicines, diagnosticsVaccines and antivirals
New risks:Greater population densityIncreased global travel and commerceMore elderly and immunosuppressed
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Potential impact of next pandemic in Massachusetts
2 million clinically ill
1 million outpatient visits
80,000 hospitalizations
20,000 deaths
Among our state’s population of about 6.4 million could be…
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1,000,000
920,000
80,000
2 Million Ill in Massachusetts(30% Attack Rate, Population 6.4 Million)
Ill, No Care Needed Outpatient Care Only Hospital Level Care
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Potential impact of next pandemic in Massachusetts
Outbreaks will occur simultaneously throughout the U.S.
Up to 40% absenteeism in all sectors at all levels during 2 week peak
Order and security disrupted for several months, not just hours or days
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Potential impact of pandemic in MA
Vaccine, antivirals, antibiotics will be
in short supply
Existing facilities will be overwhelmed
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Potential impact of next pandemic in your community
Tools available to make an estimate:
FluAid: http://www2a.cdc.gov/od/fluaid/
FluSurge: http://www.cdc.gov/flu/flusurge.htm
Build on statewide planning assumptions (30% attack rate)
Community-specific numbers get people’s attention!
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Massachusetts Pandemic PlanUpdated in October 2006
SurveillanceIncident command and controlVaccineAntiviral drug useCommunicationEmergency responseCommunity disease control and prevention
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Massachusetts Pandemic Plan
SurveillanceSentinel surveillance sitesYear-round surveillanceSyndromic surveillance
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Massachusetts Pandemic PlanVaccine
Cornerstone of preventionWon’t be widely available in early stages
Prioritization necessaryPublic participation project
Will likely require 2 doses, a month apart for fuller protection
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Massachusetts Pandemic PlanVaccine distribution
MDPH will determine allocation of vaccine and manage distribution
Vaccine priority groups are based on U.S. Dept. of Health & Human Services recommendationsLocal communities should have plans for administering vaccines to residents based on priority groups
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Influenza antiviral drug useLimited supply; will be used for treatment onlyNeed for prioritization among risk groupsUnlikely to markedly affect course of pandemicResistance to antiviral agents occurs
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Massachusetts Pandemic PlanCommunications
Build on existing system
Health & Homeland Alert Network (HHAN), MDPH website (www.mass.gov/dph/flu), conference calls
Hotlines: consumer & public clinic
Risk communication template for local public health
Risk communications exercise for local public health to practice managing communications during the phases of a pandemic
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Massachusetts Pandemic Plan
Communications
“Flu Facts: What You Need to Know” Campaign
Flu Care at Home Campaign
Library of materials
Education to encourage self-diagnosis
Public health information (risks, risk avoidance, advice on universal hygiene behavior)
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“Flu Facts: What You Need to Know” Campaign
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Flu Care at Home Campaign
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Massachusetts Pandemic Plan
Continuity of Operations Planning
Continuity of Operations Planning template, which focuses on the provision of essential services with up to 40% absenteeism at 2 week peak
Plans to meet the needs of people confined to their homes
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Other control measures
Hand hygiene (washing and alcohol-based products)
Respiratory hygiene and coughing etiquette
Social distancing
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Most of the impact and most of the response will be
local.
Local infectious disease emergency planning
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Resource: Emergency Dispensing Site Management and Operations
www.mass.gov/dph/bioterrorism/advisorygrps/pdfs/emergency_dispensing_site_3_05.pdf
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New State Volunteer Initiatives
Medical Reserve Corps: medical and non-medical volunteers who have been prescreened and trainedMA System for Advance Registration (MSAR): single non-redundant database of volunteer healthcare professionalsConnect and Serve: generic database for all non-clinical volunteer opportunities in MA
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Be Part of the Response
Plan to be part of the response, whether at work or in your community, and encourage other community members to get involved.Be sure your employer and your community have your current contact information.Join a Medical Reserve Corp where you livePromote and register with MSAR
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Use every influenza season to…Enhance infrastructureExpand expertise implementing large vaccination clinicsDevelop trained volunteersInvolve your Local Emergency Planning Committee (LEPC) Exercise and enhance your Emergency Dispensing Site (EDS) plan
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Vaccinate everyone at risk for pneumococcal disease now
Common complication of influenza
Increasingly antibiotic-resistant
Unable to conduct pneumococcal vaccine campaigns during pandemicVaccinating everyone at risk for
pneumococcal disease protects them now, and during the next pandemic!
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MDPH Flu Web SiteLink to MassPRO flu clinic site
Consumer Information
Provider Guidelines
Pandemic Planning
Pneumococcal Information
Links to CDC sites
www.mass.gov/dph/flu Influenza Information