Module 2. NTD Strategies - World Health Organization · Module 2. NTD Strategies Session 2....
Transcript of Module 2. NTD Strategies - World Health Organization · Module 2. NTD Strategies Session 2....
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PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD Strategies
Session 2. Preventive Chemotherapy Strategy
![Page 2: Module 2. NTD Strategies - World Health Organization · Module 2. NTD Strategies Session 2. Preventive Chemotherapy Strategy What Is Preventive Chemotherapy (PC)? • Preventive chemotherapy](https://reader030.fdocuments.in/reader030/viewer/2022040300/5e616bfd33e84431125cbef5/html5/thumbnails/2.jpg)
PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD StrategiesSession 2. Preventive Chemotherapy Strategy
Overview
• What is preventive chemotherapy (PC)?
• Why PC is important?
• Where more than 1 disease is prevalent, how can we optimize resource use for PC delivery?
• Stepwise approach for decision-making in PC
• What could be challenges of PC?
• Key messages
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PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD StrategiesSession 2. Preventive Chemotherapy Strategy
What is preventive chemotherapy (PC)?
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PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD StrategiesSession 2. Preventive Chemotherapy Strategy
What Is Preventive Chemotherapy (PC)?
• Preventive chemotherapy (PC) is a public health intervention based on the large-scale administration of safe drugs, either alone or in combination, against selected Neglected Tropical Diseases.
• PC is recommended by WHO as one of the key public health interventions for:
*Clonorchiasis and opisthorchiasis
LF FBT* Schisto STH Trachoma Oncho
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PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD StrategiesSession 2. Preventive Chemotherapy Strategy
What Is Preventive Chemotherapy (PC)?
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Medicine
Target age group
*Clonorchiasis and opistorchiasis
LF FBT* Schisto STH Trachoma Oncho
ALB + IVE or DEC
PZQ PZQALBor
MBDAZM IVE
Entire population
Entire population
SAC and at-risk adults
PRE SAC and SAC
Entire population
Entire population
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PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD StrategiesSession 2. Preventive Chemotherapy Strategy
Why is PC important?
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PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD StrategiesSession 2. Preventive Chemotherapy Strategy
When PC is delivered with effective medicines, with high coverage at regular interval, it can reduce overall parasite/bacterial load and reduce/interrupttransmission of the targeted NTDs in entire communities.
When PC is given early in life, it can prevent development of chronic consequences of morbidity related to these infections and improve health, education, economic status and social well being of affected communities.
This PC approach is an essential component of the strategy for sustained reduction of transmission and ultimately elimination of LF, onchocerciasis, schistosomiasis and trachoma.
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PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD StrategiesSession 2. Preventive Chemotherapy Strategy
Where more than 1 disease is prevalent, how can we optimize resource use for PC delivery?
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PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD StrategiesSession 2. Preventive Chemotherapy Strategy
Integrating Treatment For Multiple Diseases as a PackageBecause target age groups overlap among different diseases, medicines can be delivered as a package together to the same target population.
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NTD MedicinePre-SAC
(2 - 5 yr old)SAC
(5 - 14 year old)Adults
(>15 yr old)
LF DEC + ALB X X X
Oncho IVE X X
STH ALB or MBD X X
Schistosomiasis PZQ X X (only at-risk adults)
Clonorchiasis,Opistorchiasis
PZQ X X
Trachoma AZM X X X
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PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD StrategiesSession 2. Preventive Chemotherapy Strategy
Integrating PC-related Activities Across Different Disease ProgrammesBecause most of activities are common among different disease programmes, they can be delivered together for multiple diseases.
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Activities LF STH SCH FBT TRA
Advocacy √ √ √ √ √
Mapping √ √ √ √ √
Training √ √ √ √ √
Social mobilization √ √ √ √ √
Drug logistics √ √ √ √ √
Drug distribution Pre-SAC √ √ √
SAC √ √ √ √ √
Adults √ (√) √ √ √
M&E √ √ √ √ √
Coordination for other
interventions
Vector control √ √ √
Water and sanitation √ √ √ √ √
Case management √ √ √ √
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PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD StrategiesSession 2. Preventive Chemotherapy Strategy
Stepwise Approach For Decision-making in PC
1. Define distribution of NTDs and their overlap.
2. Review the WHO treatment threshold for PC by disease.
3. Apply PC algorithm.
4. Review target population and exclusion criteria.
5. Consider potential distribution channels.
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PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD StrategiesSession 2. Preventive Chemotherapy Strategy
LF and STH ++
LF and STH ++ and
SCH
Example: Cambodia data, 2008
1. Define Distribution of NTDs and Their Overlaps
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PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD StrategiesSession 2. Preventive Chemotherapy Strategy
• How to use medicines in combinations
• To whom can the drug package be given
• Use in pregnancy and children
• Recommended drug dosages
• How to monitor coverage
• Include standardized village/district recording forms and dose poles as annexes
ONCHO STH SCHLF
2. Review the WHO Treatment Strategy For PC By Disease
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PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD StrategiesSession 2. Preventive Chemotherapy Strategy
WHO Treatment Strategy For PC
DiseaseTreatment threshold inprevalence of infection
Targeted age group of treatment
Frequency of treatment
LF >1% Total population Once a year
STH>50%*
Pre-SAC and SACTwice a year
>20% but <50%* Once a year
Schistosomiasis
>50% *SAC and at-risk adults
Once a year
>10% but <50% * Once in 2 years
<10% * SACTwice during their primary schooling age
Clonorchiasis,Opistorchiasis
>20%SAC and adults
Once a year5-20% Once in 2 years
Trachoma >10% (TF in 1-9 yr old children) Total population Once a year
*Prevalence of infection in school-age childrenTF = trachomatous inflammation-follicular
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PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD StrategiesSession 2. Preventive Chemotherapy Strategy
3. Apply PC Algorithm(where LF requires MDA in ONCHO non endemic area)
MDA2 DEC + ALB
T1 ALB/MBD + PZQ (6 months after round 1)
T2 PZQ (at least 1 week after round 1)
T3 ALB/MBD (6 months after round 1)
LF +
STH ++ STH + STH -
PC round 1
PC round 2 T1
SCH -
STH ++ STH + STH -
T2 T2 T3
MDA2 MDA2 MDA2 MDA2 MDA2 MDA2
SCH +
Add MDA with Azithromycin (at least 2 weeks before or after any round) where trachoma is also co-endemic.
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PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD StrategiesSession 2. Preventive Chemotherapy Strategy
T1 ALB/MBD + PZQ (6 months after round 1)
T2 PZQ (at least 1 week after round 1)
T3 ALB/MBD (6 months after round 1)
3. Apply PC Algorithm(where LF does not require MDA)
LF -
STH ++ STH + STH -
PC round 1
PC round 2 T3
SCH -
STH ++ STH + STH -
T3
T1 T1 T2 T3 T3
SCH +
No action
required
Add MDA with Azithromycin (at least 2 weeks before or after any round) where trachoma is also co-endemic.
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PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD StrategiesSession 2. Preventive Chemotherapy Strategy
LF and STH ++
LF and STH ++ and SCH
Example: Cambodia data, 2008
PC Strategy– Round 1
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PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD StrategiesSession 2. Preventive Chemotherapy Strategy
LF and STH ++
LF and STH ++ and SCH
Example: Cambodia data, 2008
PC Strategy– Round 2
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PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD StrategiesSession 2. Preventive Chemotherapy Strategy
PC type Medicine Target population Ineligibility
MDA2 DEC + ALBEntire population in areas of LF transmission
Pregnant women, women within a week post-partum, children <90cm tall and the severely ill/very elderly
T1PZQ + ALB/MBD
PZQ: SAC and ‘at-risk’ adultsALB/MBD: PSC, SAC, ‘at-risk’ adults, WCBA including 2nd and 3rd Trimesters
PZQ: Children <94 cm (but can be treated in medical settings)ALB/MBD: Children <1 year old, Pregnant women in 1st trimester
T2 PZQ SAC and ‘at-risk’ adultsChildren <94 cm (but can be treated in medical settings)
T3 ALB/MBDPSC, SAC, ‘at-risk’ adults, WCBA including 2nd and 3rd Trimesters
Children <1 year old, Pregnant women in 1st trimester
Cs, Ov* PZQ SAC and adults Same as above
Trachoma AzithromycinEntire population in areas of trachoma transmission
Children under 6 months of age**, the severely ill, those with history of previous severe adverse events
**For children under 6 months of age, tetracycline eye ointment should be given instead.*Cs: Clonorchiasis, Ov: opistorchiasis
4. Review Target Population and Exclusion Criteria
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PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD StrategiesSession 2. Preventive Chemotherapy Strategy
Suggested PC Treatment Schedule for Multiple Diseases
Target diseases Week 1 Week 2 Week 3 Week 4 Week 5 Week 6 … 6 months
LF + STHDEC/IVM
+ ALBALB
LF + STH + SCHDEC/IVM
+ ALBPZQ ALB
LF + SCHDEC/IVM
+ ALBPZQ
STH + SCH PZQ + ALB ALB
LF + STH + TRADEC/IVM
+ ALBAZM ALB
LF + STH + SCH + TRA
DEC/IVM+ ALB
PZQ AZM ALB
LF + SCH + TRADEC/IVM
+ ALBPZQ AZM
STH + SCH + TRA PZQ + ALB AZM
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PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD StrategiesSession 2. Preventive Chemotherapy Strategy
Potential programmes Pre-SAC SAC Adults
School health programme X
School feeding programme X
Child health day X X
Vaccination campaigns X
Vitamin A supplementation X X
Deworming in ante-natal clinics X X
ITN distribution X X
Is there any existing programmes/campaigns that can be integrated with PC drug distribution?
5. Consider Potential Distribution Channels
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PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD StrategiesSession 2. Preventive Chemotherapy Strategy
What could be challenges of PC?
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PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD StrategiesSession 2. Preventive Chemotherapy Strategy
Challenges of PC – Logistics and Cost of Drug Delivery• PC needs to cover as many people in
need as possible.
• PC should be provided free of charge to the people in need.– Medicines are donated via WHO free of
charge.
– Explore the best delivery drug packages and channels to the communities in need by integration/coordination with other programmes.
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Cost breakdown of anthelminthic treatment in 6 districts in Uganda, 2003-5
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PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD StrategiesSession 2. Preventive Chemotherapy Strategy
Challenges of PC - Safety Issues (Module 5)
• Adverse events (AEs)– PC drugs have excellent safety records regardless of infection status, but
– Communities must be made aware of mild AEs that may accompany PC.
• Serious Adverse Events (SAEs)– Health workers should be trained to recognize, report and manage SAEs.
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PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD StrategiesSession 2. Preventive Chemotherapy Strategy
Activities need to be planned with all relevant programmes together, at the beginning of the year, district by district
Challenges of PC – Integration and Coordination With Other Programmes
Activities LF STH SCH FBT TRA
Advocacy √ √ √ √ √
Mapping √ √ √ √ √
Training √ √ √ √ √
Social mobilization √ √ √ √ √
Drug logistics √ √ √ √ √
Drug distribution Community-based √ √ √
School-based √ √ √
Child health day √ √ √
Immunization √ √
Health and nutrition day √ √ √
M&E √ √ √ √ √
Coordination for other
interventions
Vector control √ √ √
Water and sanitation √ √ √ √ √
Case management √ √ √ √
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PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD StrategiesSession 2. Preventive Chemotherapy Strategy
ADVOCACY
PC Challenges – Coordination With Many Partners
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PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD StrategiesSession 2. Preventive Chemotherapy Strategy
PC Challenges – Coordination With Many Partners
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Other Partnerships:
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PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD StrategiesSession 2. Preventive Chemotherapy Strategy
What do you think are the key messages from this session?
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PROGRAMME MANAGERS’ TRAINING COURSE FOR NTDS TARGETED FOR CONTROL OR ELIMINATION BY PREVENTIVE CHEMOTHERAPY INTERVENTIONS
Module 2. NTD StrategiesSession 2. Preventive Chemotherapy Strategy
Key Messages
• PC is a public health intervention aimed at controlling morbidity and transmission of targeted NTDs.
• PC focuses on regular delivery of drug packages to as many people in need.
• PC challenges NTD programme managers to i) integrate and coordinate between disease specific programmes and partners, ii) procure sufficient quantities of quality drugs, to implement drug distribution with good coverage in the most cost-effective way, iii) monitor and ensure drug safety.
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