cdc public health grand rounds working to eliminate measles … · 2015-06-16 · measles incidence...
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CDC PUBLIC HEALTH GRAND ROUNDS
Working to Eliminate Measles Around the Globe
June 16, 2015
Accessible version: https://youtu.be/zIa8WLSUCdE
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The Measles & Rubella Initiative and Partnerships for Elimination
James L. Goodson, MPHSenior Measles Scientist
Accelerated Disease Control and Vaccine-Preventable Diseases Surveillance Branch
Global Immunization Division Center for Global Health
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Measles Virus
RNA virus Family: Paramyxoviridae Genus: Morbillivirus
Humans are the only reservoir Airborne transmission via
aerosolized respiratory secretions from coughing or sneezing
After 7–21 day incubation period, clinical symptoms develop
Accompanied by immunosuppression, often leading to secondary bacterial infections
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MEASLES DISEASE Highly contagious Vaccine preventable Typically occurs in
childhood Classic rash and fever
clinical presentation Severe complications:
pneumonia, diarrhea, encephalitis, death
Case-fatality ratio: 0.1%–10%
Photo courtesy of
Professor Samuel Katz,
Duke University Medical Center
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Top Ten Causes of Death Worldwide in Children Under 5 Years, 2000
0 500 1000 1500 2000 2500
Malnutrition
Tetanus
Pertussis
HIV
Congenital Anomalies
Measles
Malaria
Diarrheal Diseases
Lower Respiratory Infections
Perinatal Conditions
Deaths (thousands)
World Health Organization (WHO), Global Burden of Disease 2000 Project
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Measles is Highly Contagious and Prevented by Vaccination
Safe and highly effective vaccine Licensed in 1963 Requires cold chain for storage
Immunity and vaccination coverage needs to be high Over 90% to interrupt transmission
and prevent epidemicsWHO recommends 2 doses for children
2 doses protects 97%–99% of children 1 dose protects
85% at 9 months ≥95% at 12 months
http://www.who.int/wer/2009/wer8435.pdf
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Efforts to Eradicate Smallpox and Polio Support Measles Elimination
Smallpox (achieved) Integrated measles control efforts in 20 West Africa countries Contributed to WHO’s Expanded Program on Immunization (EPI) Lives have been saved and resources are able to be directed to
other public health priorities Polio (nearly there)
Infrastructure to eradicate polio designed to be integrated with activities to eliminate measles
Challenges (e.g., insecurity) have delayed reaching goal Lessons learned from polio can be transferred to MR eradication Much harder than anticipated, but worth the investment The POLIO ENDGAME has begun and in countries that have
eliminated polio, assets are being transitioned
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1994 2001 2012 20202002
PAHO Goal: The Americas
Worldwide Measles Initiative
Last case in the Americas
Measles Eradication?
“Measles eradication should be done.”World Health Assembly, 2011
PAHO: Pan-American Health OrganizationGVAP: Global Vaccine Action Plan
GVAP Worldwide Goal: Eliminate in 5 of 6 WHO Regions
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Global Measles Vaccination Targets by 2015
1. Increase prevention – Increase measles vaccination coverage for first dose (MCV1) At least 90% nationally and at least 80% at district levels
2. Decrease disease – Reduce reported incidence of measles to fewer than 5 cases per million population
3. Decrease deaths – Reduce measles mortality 95%, based on number of deaths estimated in 2000
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Global Vaccine Action Plan (GVAP) Measles & Rubella Initiative Goals
Use combined measles and rubella vaccine Eliminate measles and rubella in 5 of 6 WHO regions
by 2020
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0
10
20
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70
80
90
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MC
V1 C
over
age*
(%)
Global AFR SEAR EMR AMR EUR WPR
Worldwide Measles First-Dose (MCV1) Vaccination Coverage Stagnating
MCV1 Vaccination Coverage by WHO Region
Goal: 90% or higher
AFR: African region SEAR: South-East Asia region EMR: Eastern Mediterranean regionAMR: Region of the Americas EUR: European region WPR: Western Pacific regionWHO/UNICEF coverage estimates 2013 revision, July 16, 2014
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Measles First-Dose Vaccination (MCV1) Coverage by Country – Goal is 90% or Higher
< 50% (4 countries or 2%)50–79% (33 countries or 17%)80–89% (28 countries or 14%)> 90% (129 countries or 66%)Not available
AFR: African region SEAR: South-East Asia region EMR: Eastern Mediterranean regionAMR: Region of the Americas EUR: European region WPR: Western Pacific regionWHO/UNICEF coverage estimates 2013 revision, July 16, 2014
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Measles and rubella monthly country reports to WHO, as of April 20, 2015
Vaccination Campaigns Are Effective But Sustained Efforts Are Essential
Reported Measles Cases by Month of Onset, Western Pacific Region, 2010–2015
China conducted large MCV campaigns in October 2010, leading to substantial reduction in cases
Measles Incidence (Cases per 1 million population) 2012: 5.9 2013: 17.2 2014: 43.8
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0
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90
100
0
20000
40000
60000
80000
100000
120000
2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013
Cov
erag
e (%
)
Cas
es
India Indonesia others§ SEAR MCV1 coverage SEAR MCV2 coverage
Reported Cases of Measles Drop as Measles Second Dose (MCV2) Coverage Increases
§ Others include Bangladesh, Bhutan, DPR Korea, Maldives, Myanmar, Nepal, Sri Lanka, Thailand, and Timor-LesteMCV1: First dose of measles containing vaccine MMWR 2015;64:613–7
India two-dose strategy, including large vaccination campaigns, 2010
South-East Asia Region (SEAR), 2003–2013
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Implementing Measles Second Dose (MCV2)
In 2013, global coverage of MCV2 was only 53% Increasing vaccination efforts can increase
two-dose coverage Routine Immunization (RI) practices
As children are born and grow Supplementary Immunization Activities (SIA)
Catch-up campaigns to reach large populations and different at-risk age groups
Opportunity to provide additional services beyond immunizations
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Introducing Measles Second Dose (MCV2) into Routine Immunization Schedule
Introduced to date (153 countries or 78.9%)
Planned introductions in 2015 (4 countries or 2.1%)
Not Available, No Plans by 2015 (37 countries or 19.1%)Not applicable
RI: Routine immunizationsImmunization Vaccines and Biologicals, WHO, as of March 5, 2015
Each year, more countries introduce MCV2 into RI schedule
Establishes child health platform for2nd year of life
Opportunity to catch-up other vaccines and offer other services
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43 Measles SIAs in 28 Countries Reached Over 210 Million Children in 2014
Integrated interventions:OPV – 13 Vitamin A – 8De-worming – 5Bed nets or other – 2
81% SIAs integrated other interventions
SIA: Supplemental immunization activitiesOPV: Oral polio vaccineImmunization Vaccines and Biologicals, WHO, as of May 25, 2015
Not applicableNo SIA in 2014
Measles (11)Measles and rubella (9)Measles, mumps, rubella (8)
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0
200
400
600
800
1,000
1,200
1,00
0sReduction in Estimated Measles Deaths,
1985–2013
MMWR 2014;63:1034-8
1985–2013: 87% decrease
2000–2013 75% decrease
15.6 million deaths prevented
2015 Global Target: Measles mortality reduction of 95% vs. 2000 estimates
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Strong political commitment Polio sites switching to
laboratory-supported measles surveillance
In 2010–2011, measles SIAs reached 119 million children
In 2016–2018, nationwide MR SIAs will reach 450 million children under 15 years of age
India Retooling to Eliminate Measles and Rubella
1 dot = 20 reporting sites
Over 40,000reporting sites
in India
SIA: Supplemental immunization activityMR: Measles and rubella
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Incorporating Lessons and Infrastructure from Polio Eradication Efforts
Build on existing infrastructure and investments Build on knowledge gained through polio
eradication efforts Adapt to areas of insecurity
Sustain political leadership and field worker motivation Use innovative strategies
Ensure management capacity and program accountability
Sustain gains to continue improving routine EPI
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Supporting What Works to Eliminate Measles and Rubella
Secure long-term funding (global and national) Engage communities to reach the underserved Strengthen routine immunizations Integrate surveillance Refine strategies through innovation
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We Are Working Towards A World Without Measles!
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The Role of the Global Measles and Rubella Laboratory Network
Paul A. Rota, PhDMeasles Team Lead,
Measles, Mumps, Rubella, Herpesviruses Laboratory Branch, Division of Viral Diseases,
National Center for Immunization and Respiratory Diseases
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Laboratory Surveillance for Measles and Rubella Elimination
Competent and sustainable laboratory support for global surveillance
Provided by the WHO Global Measles and Rubella Laboratory Network (GMRLN)
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Initiated in 2000 Built on Global Polio Laboratory
Network modelMulti-tiered structure
3 Global Specialized Laboratories CDC, PHE-UK, NIID-Japan
14 Regional Reference Laboratories 161 National Laboratories
586 Subnational laboratories (including 362subnational laboratories in China)
7 Global/Regional Laboratory Coordinators
Global Measles and Rubella Laboratory Network (GMRLN)
Dr. M Mulders, WHO Headquarters
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Strengths of the GMRLN
WHO/CDC
Standardized testing and reporting structure Excellent quality control Timely results that drive public health
decision making Alignment with national public health priorities Local lab management and control Integrated testing includes other vaccine
preventable diseases Measles, rubella, Yellow fever, Japanese encephalitis, rotavirus
and hepatitis B
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Roles of the GMRLN
Dr. M Mulders, WHO Headquarters
Confirm cases of suspected measles or rubella
Determine genetic relationships of circulating strains
Measure population immunity
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Laboratory Confirmation of Suspected Measles Cases
IgM: Immunoglobulin MRT-PCR: Real time polymerase chain reaction
Distinguish measles and rubella cases from other febrile rash illnesses
Detection of measles or rubella specific IgM in a serum sample taken at first contact with patient
Detection of viral RNA by RT-PCR
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Increasing Workload of the GMRLN
Dr. M Mulders, WHO Headquarters
Serum Samples Tested for Measles IgM, 2006–2014
0
50
100
150
200
250
300
2006 2007 2008 2009 2010 2011 2012 2013 2014
Thou
sand
s of
Tes
ts
Annual Monthly
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Genetic Characterization of Measles Viruses to Track Transmission
CDC and WHO GMRLN
Map transmission pathways and document interruption of transmission
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Measles Nucleotide Surveillance (MeaNS)
Global genetic sequence database for measles
Maintained at Public Health England
Governance from labs in all WHO regions
Over 22,000 sequences in database Available to participating labs Discussion of open sharing
Rapid sequence analysis and strain detection
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MeaNS Provides Summaries of the Global Distribution of Measles Genotypes
WHO and MeaNS
Distribution of measles genotypes: Mar 2014 to Feb 2015
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Confirming Vaccination Coverage
CDC, Sue Cho
Laboratories perform seroprevalence studies to verify vaccination coverage
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Challenges for the GMRLN
VPD: Vaccine preventable disease
Financial sustainability Laboratory network expansion (e.g., India) Introduction of new laboratory methods Sustain and expand quality control program Integration with surveillance for VPDs Development of effective test strategies for low
incidence settings Increased workload with national and regional
verification of measles elimination
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New Technologies on the Horizon
PHE: Public health, environmental and social determinants of health, WHOAMD: Advanced Molecular Detection, CDC GA Tech: Georgia Institute of Technology
New or improved serologic testing methods and assays High throughput neutralization High throughput seroprevalence Point-of-Care (WHO, PHE)
New or improved molecular assays Whole genome sequencing Next generation sequencing (AMD)
Vaccine development Microneedle patches (GA Tech)
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Thanks to the GMRLN and Measles and Rubella Teams at CDC
12th Annual Global Measles and Rubella Laboratory Network Meeting, September 2014, Istanbul, Turkey
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The Elimination of Measles in the Americas
Desirée Pastor, MD, MPHRegional Immunization Advisor
Pan American Health OrganizationRegional Offices for the Americas, World Health Organization
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Outline
Update of measles epidemiology in the Americas
Most critical challenges for sustaining the gains
1
2
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0
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100
0
50,000
100,000
150,000
200,000
250,000
300,000
80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15
Measles cases Rubella cases Coverage Measles
Catch up campaign for measles
Follow-up campaigns for measles
% V
acci
natio
n C
over
age
Con
firm
ed c
ases
Speed-up campaigns for Rubella
Last endemic measles case Last endemic
rubella case
Impact of Measles and Rubella Elimination Strategies in the Americas
The Comprehensive Family Immunization Unit (FGL/IM) – Pan American Health Organization, data as of June 8, 2015
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0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
0200400600800
100012001400160018002000
2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015
Brazil Canada Mexico USA Venezuela Ecuador Regional rate
N=1369
Distribution of Confirmed Measles Cases After Interruption of Endemic Transmission
N=143N=473
N=1896
Rate=1.9 x 1,000,000 population
Num
ber o
f Con
firm
ed C
ases
Rat
e pe
r 1,0
00,0
00 P
opul
atio
n
The Americas, 2003-2015
N=515
PAHO Measles Eradication Surveillance System and Integrated Surveillance Information System and country reports to The Comprehensive Family Immunization Unit (FGL/IM) – Pan American Health Organization, as of epidemiological week 21, 2015
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Geographic Distribution of Confirmed Measles Cases In The Americas
2011N=1,369 cases
2014N=1,896 cases
2015* to dateN=515 cases
Measles Confirmed Cases, 2015Brazil=141 Canada=195 Chile=5 Mexico=1 USA=173
Total= 515 cases1 red dot = 1 measles case
The Comprehensive Family Immunization Unit (FGL/IM) – Pan American Health Organization, as of epidemiological week 21, 2015 by second administrative level
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4242
0
5
10
15
20
25
30
35
40
45
1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 2 4 6 8 10 12 14 16 18 20
Ceara Pernambuco
N=1,047
Week of the Year
Last Case Reported May 18,
2015
First Outbreak in Post Elimination Era with More Than 12 Months of Transmission
2013 2014 2015
Num
ber o
f Cas
es
Confirmed Measles Cases by Epidemiological Week, Selected States Brazil, 2013-2015
The Comprehensive Family Immunization Unit (FGL/IM) – Pan American Health Organization, as of June 8, 2015epidemiological week 21, 2015 by second administrative level
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Characteristics of Measles Outbreaks in the Americas
USA (2014–2015) Brazil (2013–2015)
SpreadRapid spread within US and
neighboring countries (Canada, Mexico)
Slow, sustained spreadwith ‘drop by drop’ transmission
in Pernambuco and Ceará
Genotype More than one genotype in US and Canada Single genotype, one outbreak
OutbreakControl Rapidly controlled Ongoing outbreak after 24 months
Ages ofCases USA: 53% 5–39y and 28% in <5y Pernambuco: 48% <1y
Ceará: 28% <1y and 34% 15–29y
Case VaccineStatus More than 80% unvaccinated Around 89% unvaccinated
Barriers toVaccination
Philosophical or religious exemptions, or too young
to vaccinate
Non-eligible for vaccine, limited access to health services, lack of
vaccines, limited human resources
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Outline
Update of measles epidemiology in the Americas
Most critical challenges for sustaining the gains
1
2
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Imported Cases Are Biggest Threat to Maintaining Elimination Efforts
0
500
1000
1500
2000
2500
Imported Import Related UnknownBrazil (2011-2015) Canada (2011-2015) Ecuador (2011-2013) United States (2011-2015) Other Countries (2011-2015)
11%
59%
30%
Con
firm
ed M
easl
es C
ases
PAHO Measles Eradication Surveillance System and Integrated Surveillance Information System and country reports *Data as of 21 May 2015
N=4,357
Distribution of confirmed measles cases by import status, The Americas, 2011-2015*
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For the duration of the trip and upon returning, travelers should For the duration of the trip and upon returning, travelers should note any For the duration of the trip and upon returning, travelers should For the duration of the trip and upon returning, travelers should note any note any of the following symptoms: • Fever• Rash • Cough, coryza (runny nose), or conjunctivitis (red eyes) • Joint pain• Lymphadenopathy (swollen glands)
If travelers suspect If travelers suspect they have measles or rubella, they should: • Remain at their current residence (e.g., hotel or home) except to seek
professional health care. • They should not travel nor go to public places. • Avoid close contact with other people for seven days
following onset of rash.
Recommendations to Any Person Traveling to Areas with Measles Circulation
PAHO recommends that any traveler over the age of six months be fully vaccinated against measles and rubella, at least 2 weeks before departure.
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2 or more1 to 1.99Less than 1No data available
Rate per 100,000 population
2013
Ensuring Quality of Surveillance at the Subnational Level
2014
Rate of Suspected Measles/Rubella Cases, Sub national Level, 2013-2014Expected rate is 2 or more per 100,000 population
The Comprehensive Family Immunization Unit (FGL/IM) – Pan American Health Organization
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0
20
40
60
80
100
COL PER ARG PAN MEX JAM DMA RegionalTotal
MMR2 DTP4
Overcoming Immunity Gaps by Giving MMR2 and DTP4 Simultaneously
Perc
ent
MMR2 and DTP4 Reported Coverage in Selected Countries, 2013
MMR2: Measles, mumps and rubella, second dose DTP4: Diphtheria, tetanus and pertussis, fourth dose COL: Colombia PER: Peru ARG: Argentina PAN: Panama MEX: Mexico JAM: Jamaica DMA: Dominican RepublicPAHO-WHO/UNICEF Joint Reporting Form, 2014
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4949
Ensuring Second Vaccination Opportunity To Maintain Measles and Rubella Elimination
Chile:(1–4y) MMR
October
Colombia:(2–4y) MMRSeptember
Programmed Follow-up Campaignsin the Americas, 2105
Dominican Republic: (1–4y) MR April–May
Types and Reach of Mass Vaccination CampaignsCatch-up (<15y): 140 million personsFollow-up (1–4y): 60 million childrenSpeed-up (adol/adult): 250 million persons
Adol: AdolescentsThe Comprehensive Family Immunization Unit (FGL/IM) – Pan American Health Organization, as of June 11, 2015
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Challenges to Sustain the Gains
Increase quality of MR surveillance indicators to rapidly respond to imported MR cases
Increase data analysis at the local level for strengthening MR surveillance
Increase MMR1 and MMR2 vaccination coverage Support countries to ensure high quality
follow-up campaigns Declare measles eliminated in the Americas by 2016
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5252
Global Strategy to Eliminate Measles
Peter Strebel, MBChB, MPHAccelerated Disease Control Leader
Expanded Programme on ImmunizationWorld Health Organization
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Overview What are the strategies?
Why has progress slowed?
How can progress be accelerated?
Outline
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5 Key Strategies:1. Achieve high population immunity
through vaccination2. Conduct effective surveillance
and monitoring 3. Develop outbreak preparedness
and response4. Communicate to engage public’s
confidence and build demand5. Perform research and development to
improve program efficiency
Global Measles and Rubella Strategic Plan
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Failure to Vaccinate Causes Measles Outbreaks
(70 countries or 36%)(34 countries or 18%)(34 countries or 18%)(41 countries or 21%)(15 countries or 8%)(16 countries or 8%)
<1≥1 - <5≥5 - <10≥10 - <50≥50No data reported to WHO HQNot applicable
USA4
Jan 4–Apr 2, 2015159 cases,
82% not vaccinated or vaccine status unknown
Nigeria3
Jan–Apr, 20151,350 cases
78% not vaccinated
W. Pacific Region2
Apr 2014–Mar 201516,369 cases98% <2 doses
1. Rate per 1,000,000 population2. WHO/HQ monthly measles surveillance data as of May 4, 20153. WHO/African Region measles surveillance data as of May 14, 20154. MMWR April 2015:64;373-376
E. Mediterranean2
Apr 2014–Mar 20157,592 cases
83% <2 doses
Reported Measles Incidence Rate1
April 2014 through March 2015
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21 Million Infants Missed MCV1 in 2013
Over 60% of these children are in 6 countries India Nigeria Ethiopia Indonesia Pakistan Democratic Republic
of Congo (DRC)
India, 6.37
Nigeria, 2.66
Ethiopia, 1.68Indonesia, 1.11Pakistan, 0.74
DRC, 0.68Philippines,
0.38
USA, 0.38
Afghanistan, 0.37
Iraq, 0.36
Rest of the world, 7.13
Number of children (millions)
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5757
Global Routine Immunization Strategies and Practices – A Call to Invest in 8 Core Areas
Global Routine Immunization Strategies and Practices (GRISP), a companion document to the Global Vaccine Action Plan (GVAP), DRAFT June 10, 2015
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5858
Monitoring Progress through Regional Verification of Measles Elimination, 2014–2015
WHO RegionRegional Verification
Commissions Established
Elimination Achieved
No. of countries % of countries
Americas1 Yes 34 97%
Europe2 Yes 22 41%
Western Pacific3 Yes 6 22%
Eastern Mediterranean No - -
South-East Asia No - -
Africa No - -
1. Progress report on Plan of Action for Maintaining Measles, Rubella, and CRS Elimination in the Americas, September 12, 20142. Third meeting of the European Regional Verification Commission for Measles and Rubella Elimination (RVC) November 2014 3. http://www.wpro.who.int/mediacentre/releases/2015/20150327/en/
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Innovations – Intradermal Patch Vaccination
RationaleRationale
GA Tech and CDC
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Measles and Rubella Initiative Management Team
Resource Mobilization
Routine Immunization
Strategic Communications
Programme Implementation
Vaccine Supply Coordination
Research and Innovation
Working GroupsStrategies
2013 Annual Report of the Measles and Rubella Initiativehttp://www.measlesrubellainitiative.org/wp-content/uploads/2014/08/annual-report_2014.pdf
1. Achieve and maintain high levels of population immunity
2. Communicate and engage to buildpublic confidence
3. Monitor disease using effectivesurveillance
4. Maintain outbreak preparedness and response
5. Research and develop improvedvaccination & diagnostic tools
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Critical Shortfall of Funding
718
266
369
0
200
400
600
800
1000
1200
1400
GAVI Measles & Rubella Initiative Shortfall in Funding
In m
illio
ns o
f USD
$1.4 billion needed for measles and rubella control, 2015-2020
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6262
Implementing Our Plan
5 clear strategies to eliminate measles and rubella Cause of recent outbreaks is failure to fully
implement the strategies To accelerate progress we need
Investment in immunization programs Verification commissions to monitor progress Game-changing solutions Effective program management Resource mobilization
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6363
Regaining Momentum in the Fight Against Measles
Measles is preventable through vaccination Combined vaccines make it possible to eliminate
rubella and measles The Region of the Americas eliminated rubella in April 2015
The Global Measles and Rubella Laboratory Network provides valuable surveillance and disease tracking
Progress has slowed and gains in some regions have been lost
“The best defense against measles is a strong offense.” –Walt Orenstein
Orenstein, WA and Seib K. NEJM, 2014
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Thank You
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Achieving a world without measlesby connecting the dots