interventions to address deaths from childhood pneumonia and diarrhoea equitably: what works and at...
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Prof. Zulfiqar A Bhutta: Interventions to address deaths from childhood Pneumonia and Diarrhoea equitably: what works and at what cost? Professor & Founding Chair, The Aga Khan University As presented at Launch of The Lancet Series on Childhood Pneumonia and Diarrhoea, at the Royal College of Pediatrics and Child Health - 12 April 2013 In support of the UNICEF & WHO Integrated Global Action Plan for the Prevention and Control of Pneumonia and Diarrhoea View the film accompanying the presentation at: www.wateraid.org/news/news/global-action-plan-for-pneumonia-and-diarrhoeaTRANSCRIPT
Interventions to address deaths from childhood Pneumonia and Diarrhoea equitably:
what works and at what cost?
Zulfiqar A Bhutta, Jai K Das, Neff Walker, Arjumand Rizvi, Harry Campbell, Igor Rudan, Robert E Black, for The Lancet Diarrhoea and Pneumonia Interventions Study Group
April 12, 2013
Lancet Launch London
In Paper 2 of this series
• We systematically reviewed evidence showing the effectiveness of various potential preventive and therapeutic interventions against childhood diarrhoea and pneumonia, and relevant delivery strategies
• We used the Lives Saved Tool model to assess the effect of scaling up 15 proven interventions on mortality due to diarrhoea and pneumonia and lives saved in 75 Countdown countries
Conceptual Framework
INCREASED SUSCEPTIBILITY
INCREASED SUSCEPTIBILITY
EXPOSURE
EXPOSURE
PNEUMONIA
DIARRHOEA
PNEUMONIA
DIARRHOEA
ENVIRONMENTALWASH*, reduce overcrowding and Household air Pollution
NUTRITIONBreast feeding promotion,Preventive vitamin A or zinc supplementation*
VACCINES Measles, haemophilus Influenzae type B, Pneumococcal infection, Rotavirus, cholera
TREATMENTOral rehydration solution, continued feeding after diarrhoea, zinc for diarrhoea treatment, probiotic use, antibiotics and oxygen therapy for pneumonia, antibiotics for dysentery
DELIVERY PLATFORMSCommunity based health & behavior change promotion
Financial Incentives to promote care seeking
Integrated Community Case Management
Facility Based IMCI
SURVIVALSURVIVAL DEATHDEATH
Review evidence base for key diarrhea and pneumonia prevention and treatment interventions
Goal: To estimate the effect of selected interventions on diarrhea and pneumonia morbidity and mortality in children less than 5 years of age
Methods: • Conducted systematic literature review of all outcomes• If data on 0-5 years was scarce, we included older children• Abstracted data• Applied standard methods for risk of bias assessment • Applied standard set of LiST rules for estimating effect on morbidity and
mortality given evidence available
Methods
Interventions common to Diarrhoea and Pneumonia
Not breast feeding was associated with
• 165% (RR 2·65, 95% CI 1·72–4·07) increase in diarrhoea (0–5 months)
• 32% (1·32, 95% CI 1·06–1·63) increase in diarrhoea (6–11 months) • 32% (1·32, 95% CI 1·06–1·63) increase in diarrhoea (12-23 months)
• 47% (1·47, 95% CI 0·67–3·25) increase in diarrhoea mortality (6–11 months)
• 157% (2·57, 95% CI 1·10–6·01) increase in 12–23 months
BREASTFEEDING AND THE RISK FOR MORBIDITY AND MORTALITY
BREASTFEEDING EDUCATION AND EFFECTS ON BREASTFEEDING RATES
Increased EBF • 43% at 1 day • 30% at 0–1
months• 90% at 1–6
months
Decreased no breastfeeding• 32% at 1 day, • 30% at 0–1 month• 18% for 1–6 months
• Predominant and partial breastfeeding were not significant
• After 6 months increase rates of partial breastfeeding by 19%
Risk reductions for diarrhoea
• 48% with hand washing with soap
• 17% with improved water quality
• 36% with excreta disposal
WATER, SANITATION, AND HYGIENE INTERVENTIONS
Non-significant reduction in
• Diarrhoea-related mortality: 18% (0·82, 95% CI 0·64–1·05)
• All-cause mortality: 9% (0·91, 0·82–1·01) • ALRI-related mortality: 15% (0·85, 0·65–1·11)
PREVENTIVE ZINC SUPPLEMENTATION
Diarrhoea specific interventionsPreventive
• Effectiveness against very severe rotavirus infection: 74% (95% CI 35–90%)
• Effectiveness against severe rotavirus infection: 61% (95% CI 38–75%)
• Effectiveness against hospital admission for rotavirus: 47% (95% CI 22–64%)
ROTAVIRUS VACCINE
• Effectiveness against cholera infection: 52% (RR 0·48, 95% CI 0·35–0·64)
• Increase in Vibriocidal antibodies by124% (RR 2·24, 95% CI 1·32–3·80)
• Increase in risk of adverse events by 42% (RR 1·42, 95% 1·06–1·89)
CHOLERA VACCINE
Diarrhoea specific interventionsTherapeutic
Reduction in:
• Diarrhoea mortality by 69% (95% CI 51–80%)
• Treatment failure by 0·2% (95% CI 0·1–0·2%)
ORS and recommended home fluids
Significant reduction in:
• All-cause mortality by 46% (RR 0.54, 95% CI 0·32–0·88)
• Hospital admission by 23% (RR 0·77, 95% CI 0·69–0·85)
Non-significant reduction in:
• Diarrhoea mortality by 66% (RR 0·34, 95% CI 0·04–1·37)
• Diarrhoea prevalence by 19% (RR 0·81, 95% CI 0·53–1·04)
Therapeutic Zinc supplementation
In acute diarrhoea lactose –free diet significantly reduced:
• Duration of diarrhoea: SMD –0·36, 95% CI –0·62 to –0·10
• Treatment failure: RR 0·53, 95% CI 0·40–0·70
• Weight gain did not have any significant effect
Feeding strategies & improved dietary management of diarrhoea
Cryptosporidiosis:• Reduced clinical failure by 52% • Reduction in parasitological failure by 38% • Non-significant reduction in all-cause mortality
Antibiotics for Shigella, Cholera and Cryptosporidiosis
Shigella:• Reduced clinical failure by 82%• Reduced bacteriological failure by 96%
Cholera:• Reduced clinical failure by 63% • Reduced bacteriological failure by 75%
Pneumonia specific interventionsPreventive
Hib Vaccine:
• Severe pneumonia by 6% (RR 0·94, 95% CI 0·89–0·99)
Vaccines
Measles Vaccine:
• 85% (95% CI 83–87%) effective in prevention of disease before age 1 year
Pneumococcal conjugate vaccine:
• 29% reduction in radiologically confirmed pneumonia• 11% reduction in severe pneumonia
Pneumonia specific interventionsTherapeutic
Oral or injectable antibiotics reduced:
• All-cause neonatal mortality by 25% (RR 0·75, 95% CI 0·64–0·89)
• Neonatal pneumonia mortality by 42% (0·58, 95% CI 0·41–0·82)
Antibiotics for the treatment of neonatal pneumonia
• Pulse oximetry together with oxygen therapy reduced severe
• pneumonia mortality by 35% (RR 0·65, 95% CI 0·52–0·78)
Oxygen systems
Delivery Platforms
Community-based promotion and case management:• 160% significant increase in use of oral rehydration solution• 80% increase in use of zinc in diarrhoea • 13% increase in care-seeking for pneumonia• 9% increase in care-seeking for diarrhoea. • 75% significant decline in inappropriate use of antibiotics for
diarrhoea• 40% reduction in rates of treatment failure for pneumonia.
Reduction of financial barriers• Promote increased coverage of child health interventions• Pronounced effects achieved by those that directly removed user
fees for access to health services.
LiST modeling effects on mortality outcomesfor 75 Countdown countries
Historic Trends Scale up- 54% of diarrhoea and 51% of pneumonia deaths in children younger than 5 years can be averted
Ambitious Scale up- Eliminate almost all diarrhoea deaths, but only two-thirds of pneumonia deaths
Coverage of Interventions in 75 Countdown Countries
Additional effect of the ambitious scale-up approach on diarrhoea and pneumonia deaths averted for the 75 Countdown countries up to 2025 Specific Interventions
Impact of individual interventions on deaths due to diarrhoea and pneumonia (Sequential)
Antibiotics for dysentery
Zinc - for treatment of diarrhea
Vitamin A supplementation
Hygienic disposal of children's stools
Rotavirus Vaccine
ORS
Improved sanitation
Hand washing with soap
Hib Vaccine
Zinc supplementation
Improved water source
Oral antibiotics : case management of pneumonia in children
Breastfeeding promotion
Case management of neonatal infections
Pneumococcal Vaccine
- 50,000 100,000 150,000 200,000 250,000 300,000 350,000
Equity Analysis
Equity analysis for Bangladesh, Ethiopia and Pakistan
Cost Analysis
The costs are based on four components:• Personnel and labour• Drugs and supplies• Other direct costs• Indirect costs
• Historic Trend- USD3·8 billion dollars to avert 882,274 deaths• Ambitious Scale-up - USD6·715 billion dollars to avert
1,439,437 deaths• An extra USD2·914 billion to save an additional 557,163 lives.
• Most the interventions exist within present health systems, although their coverage and availability to poor and marginalised populations varies greatly
• Delivery strategies receive relative less focus• Structural changes are needed to reduce environmental pollution
and provide safe water and sanitation• The forthcoming decade of vaccines initiative offers a unique
possibility• Community delivery of these interventions could also ensure
equitable delivery
Discussion
• Interventions with maximum effect include breastfeeding, oral rehydration solution, and community case management
• 15 interventions delivered at scale can prevent most of diarrhea and pneumonia deaths
• If the interventions are scaled up by 80% in the 75 Countdown countries, they could save 95% of diarrhoeal and 67% of pneumonia deaths in children younger than 5 years by 2025
• Scaling up of diarrhoea and pneumonia interventions would cost USD6·715 billion, only USD2·9 billion more than present levels of spending
• The cost-effectiveness of these interventions in national health systems needs urgent assessment
Key messages
THANKS