Summary of the findings and recommendations of the
"Global technical consultation meeting to assess
the feasibility of measles eradication" SAGE
WHO, Geneva
November 2010
2
Outline
Feasibility
Challenges – Regional – Global
Questions to SAGE
1. Biological feasibility
2. Programmatic feasibility
3. Vaccine market analysis
4. Impact on health systems
5. Economic analysis
7. Global context and political feasibility
Global Consultation
meeting (2010)
Recommend global
measles goal
6. Risk analysis for post-measles era
SAGE
Feasibility of Measles Eradication
WHA set global measles
goal?
1. Biological and Technical Feasibility
International Task Force on Disease Eradication Carter Center, June 4, 2009
"measles eradication is biologically feasible using tools that are currently available, as already demonstrated in the Americas, although implementation challenges remain in each of the remaining five regions" *
* WER , October 30, 2009
Humans are the only host Life-long immunity after natural infection Only one serotype Genetically stable Rinderpest virus eradicated since 2001 Challenges:
– Highly infectious (>93-95% population immunity needed) – Population growth and density, migration and international travel – HIV epidemic
Measles vaccines are safe and effective Vaccines provide long-term protection against all known
genotypes Accurate diagnostic tests Current vaccines have eliminated measles in the
Americas Challenges:
– Vaccine needs cold chain and sterile injection – Not effective in early infancy – 2 doses needed
2. Programmatic Feasibility
Impact of Accelerated Activities
Number of reported measles cases by WHO Region, 2000-2009*
Number of estimated measles deaths, 2000-2008
Source: Cases from annual Joint Reporting Form Deaths from Wkly Epid Rec Dec 4, 2009 *2009 case data incomplete
67% decrease
78% decrease
High-low bars indicate uncertainty
Follow-up campaigns
Catch-up campaigns
Measles Elimination in the Americas, 1980-2009*
*Data until EW 52/2009. **Prior to 1995, reported cases. Source: Country reports to PAHO.
Routine infant vaccination coverage
(%)
Con
firm
ed c
ases
**
During the period 2000-2020, the measles elimination program in the Americas will have prevented 3.2 million cases of measles and 16,000 deaths, saving US$
208 million in treatment costs.
Interruption of endemic transmission
Measles Control Goals by WHO Region, November 2010
SE Asian mortality Reduction goal
Americas, Europe, E. Mediterranean, W. Pacific, Africa have elimination goals
3. Vaccine market analysis
Vaccine Market analysis – Oliver Wyman
Interviews with industry and programme experts
For eradication by 2020, total MCV demand would increase from ~3.5 to ~4.2 billion doses
Manufacturing capacity would be sufficient
Concentration of manufacturing capacity (low to moderate risk)
Mitigate through stockpiles or long-term supply contracts
Continually refine the demand forecast and rapidly communicate to suppliers
No.
of d
oses
in m
illio
ns
4. Impact of Measles Eradication Activities on Immunization
and Health Systems
Impact of Measles Eradication Activities on Immunization and Health Systems - LSHTM
6 countries: – Cameroon, Tajikistan, Brazil,
Vietnam, Bangladesh and Ethiopia
Document reviews and interviews
Both positive and negative impacts, but over all positive impact in ALL countries studied.
Negative impact more pronounced in poorer countries with weak health systems and multiple SIAs
Health System
Key positive and negative effects of measles activities on the health system
Positive effects: – Better staff skills for service delivery and programme management. – More lab equipment and improved surveillance – Strengthened cold-chain and logistics system – Better information on target populations – More coordination with other sectors – Add-on interventions
Negative effects: – Delay or interruption of health services during SIAs – Incentives can have negative impacts on staff motivation
Adding health system value
Vitamin A
Polio Vaccination
De-worming Tablets
Bednets
>186 million >95 million >81 million >37 million
In 2008, 29 (88%) of 33 campaigns were integrated with at least one other intervention
5. Economic analysis
Economic Analysis of Measles Eradication - David Bishai and Ann Levin/Colleen Burgess
Cost effectiveness analysis carried out by two groups
Field evaluations in 6 countries: – Brazil, Bangladesh, Columbia, Ethiopia, Tajikistan, Uganda – Global analysis of costs
Results – Baseline: 90% mortality reduction – Measles eradication by 2020 was highly cost-effective in all 6 countries and
globally (cost-saving in Brazil & Columbia) – Eradication is highly CE when 2 doses of MCV are continued post
eradication, – Intermediate targets 95% and 98% mortality reduction also highly CE
Measles eradication ranks among top best buys in public health
20
Income Group by
Elimination Status #
Coun
trie
s Total Cost
(Millions, 2010 USD)
Incremental Cost
(Millions, 2010 USD)
Deaths Averted
DALYS Averted
ICER, $ per DALY
Averted (2010 USD)
GDP per Capita
Measles not eliminated by 2010
Low 42 $1,040 $137 1,045,000 32,398,000 $4 $503
Low-Mid 41 $10,529 ($296) 9,408,000 291,725,000 Cost /life saving $2,310
Upper-Mid 24 $1,759 $67 504,000 15,613,000 $4 $7,523
High 39 $53,823 $8,216 50,000 1,558,000 $5,273 $38,134
Measles eliminated by 2010*
Low-Mid** 16 $1,404 ($140) 66,000 2,037,000 Cost /life saving $2,310
Upper-Mid 19 $2,068 ($105) 81,000 2,526,000 Cost /life saving $7,523
High 12 $4,006 ($47) 2,000 58,000 Cost /life saving $38,134
TOTAL 193 $74,629 $7,832 11,156,000 345,915,000 N/A N/A
6. Risk analysis for post-eradication era
Risk analysis for post-eradication era - Ray Sanders
Measles virus will continue to exist after eradication
Re-introduction could occur from "natural" or "laboratory" sources
Risk of accidental reintroduction from any source, including persistent infections and lab materials is low to very low,
If immunization levels fall, measles will become a credible agent for bioterrorism
Conclusion: post-eradication risks are low, and should not deter any attempt at measles eradication.
Stakeholders Analysis;
Comparing Measles with Previous Eradication Programs
7. Global Context and Political Feasibility
Stakeholders analysis – Coxswain Social Investments
Assess stakeholders political will and financial capacity to support a measles eradication initiative through interviews and an E-survey – low response rate!
Strong commitment among internal stakeholders and country commitment to regional elimination goals.
At present, there is inadequate political will within donor and development agencies to support an eradication goal.
'Time may not be ripe' for setting an eradication target now – make progress with polio – secure commitment to raise funds needed
Summary of findings • Measles Partnership perceived to be strong • Donor and host-‐government support considered key to success
• No consensus on =ming • Organiza=ons with internal (knowledgeable) employees more likely to support eradica=on
• Many mispercep=ons stand to be corrected • No immediate funding streams iden=fied • Polio ini=a=ve holds valuable experience to inform decisions and strategies
Comparing Measles with Previous Eradication Programs: Enabling and Constraining Factors – R. Keegan
Literature review – political, social, economic & technical factors – compared with yaws, malaria, smallpox, guinea worm & polio
Key enabling factors Key challenges
Strong country support Increased insecurity
Information technology allows rapid communications
Infectiousness of measles
Laboratory technology is better Competition for funds
Affordable cost ($5-8 billion) Co-existence with polio
Comparing Measles with Previous Eradication Programs: Enabling and Constraining Factors – R. Keegan
Conclusions of study:
Measles eradication will be very challenging, but probably not as difficult as polio or malaria eradication.
Measles eradication should be undertaken only if the commitments and resources will be adequate to meet the political, social, economic, and technical challenges.
Challenges
28 countries had measles outbreaks (June 2009 - October 2010) – > 100,000 confirmed measles cases
reported – > 1300 reported measles deaths – 18 of the 28 countries did their most
recent SIAs in the last 24 months.
Data analysis and preliminary investigations revealed: – gaps in routine immunization services – suboptimal coverage during recent SIAs
(ANG, NAM, BOT) – too long intervals between SIAs (SOA,
LES, ZAM)
Reported measles case burden. AFR (Jan –October 2010)
EMRO – war and conflict
31
EURO – vaccine antagonists (2009)
Source: Admin Coverage WHO UNICEF JRF, 2009 (WHO UNICEF Coverage Estimates used if Admin coverage not provided)
Both MCV1 and MCV2 ≥ 95% Either MCV1 or MCV2 > 95% Both MCV1 and MCV2 < 95%
Measles Coverage (DLHS-3)
0 10 20 30 40 50 60 70 80 90
100
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d*
Catch-up Campaigns
India : 69.6%
Immunization Division, MOHFW, Govt. of India
2nd Dose of RI
Measles Cases, by Age and Region Viet Nam, Oct 2008 – Jan 2010
N = 7,490
AMRO: High costs for maintaining elimination
• The Region is under constant threat of importations as long as endemic measles virus continues to circulate in other regions of the world.
• Additional US $77 million required to continue follow-up SIAs in LAC during 2020-2040 if measles eradication is not achieved.1
• Estimated costs associated with recent outbreaks US $8,600 - $20,300.
1Acharya A et al. Cost-effectiveness of measles elimination in Latin America and the Caribbean: a prospective analysis. Vaccine 2002; 20:3332-81.
Source: Preliminary information reported by the countries to PAHO.
Lessons from Polio
Major barriers to achieving polio thresholds
Active conflict
Insufficient political buy-in
& insecurity
Insufficient political & societal buy-in
Insufficient vaccine effectiveness
Recurrent outbreaks due to weak routine immunization systems
Pop
ulat
ion
Imm
unity
Programme Performance
1. Where is the immunity threshold for stopping transmission highest?
2. Where is routine coverage lowest?
3. Where is the difference between these greatest?
Weak Immunisation Systems
Coverage <80% in Sub-Saharan Africa and SE Asia
23.7 million unvaccinated infants
60% in large countries: – India 7.4 m – Nigeria 3.2 m – China 1.1 m – Pakistan 0.7 m – Indonesia 0.7 m – Ethiopia 0.6 m
Measles 1st dose coverage in 2009
80-89% (29 countries or 15%)
60-79% (35 countries or 18%)
>=90% (115 countries or 60%)
<60% (14 countries or 7%)
Source: WHO/UNICEF coverage estimates 1980-2009, July 2010
193 WHO Member States. Date of slide: 21 July 2010
* Excluding all activities in India, anticipated country contributions for follow-up SIAs, and intro. of MCV2
11 59
36 38 44
94
Figure 1: Measles Initiative Annual Donations 2001-2009 and Financial Resource Requirements, Projections,
Funding Gap 2010-2015*
2010-2015 funding gap $ 282 million US
Global Measles Update, May 17 2010 40 |
Risk of resurgence; scenario 2010 - 2013
Source: WHO/IVB measles deaths estimates, October 2009; Lancet 2007;369:191-200
Method from Lancet 2007; 369: 191–200
Projected worst case scenario: none of 47 priority countries carry out SIAs during 2010-2013
Loss of contribution of measles to overall reduction in child mortality
Reported Number of Measles Cases and Estimated Coverage* with MCV1 in 7 southern African countries, 1990-2010†
* Vaccination coverage is a population weighted average for these 7 countries Source: WHO/UNICEF coverage estimates 1980-2009, Aug 2010. † Reported cases provisional as of Sept 2010; WHO/UNICEF Joint Reporting Form, 9 Sept 2010 WHO/ISTESA weekly outbreak update, 14Sept 2010
Catch-up campaigns
Follow-up campaigns
Measles resurgence in Southern Africa countries Confirmed measles cases and reported deaths, January 2009 – through October 2010
Namibia Since August 2009 Total cases: 3,176 Total deaths: 58
South Africa Since June 2009 Total cases: 18,004 Total deaths: 18
Swaziland Since November 2009 Total cases: 442 Total deaths: 3
Lesotho Since November 2009 Total cases: 2,845 Total deaths: 37
Data source: Measles outbreak report, AFRO 7 Oct 27 2010
Botswana Since October 2009 Total cases: 1,360 Total deaths: 0
Zambia Since May 2010 Total cases: 10,0898 Total deaths: 160
Mozambique Since December 2009 Total cases: 367 Total deaths: 0
Zimbabwe Since Sept 2009 Total cases: 2,192 Total deaths: 527
Malawi December 2009 Total cases: 56,196 Total deaths: 249
B3
B2
≥10,000 cases
<1,000 cases 1,000-10,000 cases
Research Questions
• What research gaps should be addressed to enable measles eradication?
• epidemiological research • operational research • immunization strategies • laboratory methods
• Discussions held but more in-depth discussion needed to identify and prioritize research questions.
• Meeting planned Q1 2011.
The Eradication Debate
Let's eradicate
This decade!!
No! Let's eradicate
Now!!
No! No! Let's Not
Eradicate!!
Key recommendations of ad hoc advisory group
Measles can and should be eradicated.
Measles eradication activities should be carried out in the context of strengthening routine immunization
The WHA should consider establishing a target date for measles eradication once SEAR has established an elimination target.
Global eradication by 2020 is feasible (given measurable progress towards 2015 targets)
Measles eradication activities should be used to accelerate rubella control and the prevention of CRS.
'Eradication attacks inequities & provides the ultimate in social justice.'
Dr Bill Foege
Questions to SAGE - For Decision
Can measles be eradicated?
Should be measles be eradicated?
What are the requirements for setting an eradication target? – Elimination target for SEAR? – Commitment of needed financial resources? – Polio eradication? Milestones in polio eradication? – Political commitment? – Measurable progress towards the 2015 target?
Is 2020 an appropriate target date?
What are the appropriate strategies for eradication? – Within the context of immunization and health systems?
What are the recommended next steps for WHO?
Acknowledgements Partners of the MI
WHO Regional Advisors, Focal Points and study country WHO national staff
Members of SAGE working group on measles
Members of the QUIVER and Ad hoc QUIVER WG on measles
BMGF
WHO HQ team
THANK YOU