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NATIONAL VECTOR BORNE DISEASE CONTROL PROGRAMME (NVBDCP)

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INTRODUCTION

1. Malaria
2. Lymphatic Filariasis
3. Kala-azar (Visceral Leishmaniasis)
4. Japanese Encephalitis (JE)
5. Dengue
6. Chikungunya

• Out of the six diseases, five (malaria, filariasis, JE, dengue, chikungunya) are transmitted by mosquitoes; Kala-azar is transmitted by sand flies.
• Chikungunya re-emerged as epidemic outbreaks after more than three decades.

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THREE-PRONGED STRATEGY OF NVBDCP

• Early case detection and complete treatment
• Strengthening of referral services
• Epidemic preparedness and rapid response

• Indoor Residual Spraying (IRS) in selected high-risk areas
• Insecticide Treated Bed-Nets (ITNs/LLINs)
• Larvivorous fish
• Anti-larval measures in urban areas
• Source reduction and minor environmental engineering

• Behaviour Change Communication (BCC)
• Public-private partnership and inter-sectoral convergence
• Human resource development through capacity building
• Operational research (drug resistance and insecticide susceptibility studies)
• Monitoring and evaluation through web-based MIS
• Vaccination against JE
• Annual Mass Drug Administration (MDA) for lymphatic filariasis

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(A) MALARIA

Historical Background

• 1953: Launched as National Malaria Control Programme (NMCP) during the First Five Year Plan.
• Due to spectacular success, it was converted into the National Malaria Eradication Programme (NMEP) in 1958.
• Malaria resurged in the 1970s and thereafter.
• Now integrated under NVBDCP with goal of elimination (not just control).

National Framework for Malaria Elimination (2016-2030) - Phase Goals

Administrative Structure

• Central level: Directorate of NVBDCP under MOHFW
• State level: State Health Directorates with programme officers (SDOs)
• District level: CMO/DHO with District Malaria Officer (DVBDC officer), assisted by Assistant Malaria Officer (AMO) and Malaria Inspectors (MIs)
• PHC level: Medical Officer; laboratories decentralized to PHC level
• Community level: MPWs, ASHAs, and community health volunteers

Drug Distribution Centres (DDCs) and Fever Treatment Depots (FTDs)

• DDCs: Dispense anti-malarial tablets only (per NMEP schedule)
• FTDs: Collect blood slides + dispense anti-malarial tablets
• Both are manned by voluntary community workers

Urban Malaria Scheme

• Launched in 1971 to reduce/interrupt malaria transmission in towns
• Methodology: intensive anti-larval measures + drug treatment
• Currently protecting 130 million population in 131 towns in 19 states/UTs
• Urban malaria accounts for ~7.4% of total cases and 10.9% of deaths
• Urban vector breeds in man-made containers (overhead tanks, coolers, tyres, etc.)
• Key measures: civil bye-laws, larvivorous fish, larvicides

Surveillance (Key Points)

• RDTs introduced in 2003 under NVBDCP
• Bivalent RDTs introduced in 2012 (detect both P. vivax and P. falciparum)
• Sentinel surveillance established in high-endemic districts (1-3 sentinel sites per district in large hospitals)
• MF-2 forms dispatched to PHC labs twice weekly by MPWs

Case Management

• No scope for presumptive treatment - confirmed diagnosis required
• New Drug Policy of 2013 followed
• For P. vivax: 14 days of primaquine (to kill hypnozoites)
• For P. falciparum: 3-day ACT regimen

Special Strategy for P. vivax Elimination

1. Hypnozoites prolong parasite lifespan (hard to detect)
2. RDTs for P. vivax are less sensitive than for P. falciparum
3. Requires 14-day primaquine therapy (vs. 3-day for P. falciparum)
4. Longer incubation period

District Stratification by API

• LLIN coverage: population in areas with API ≥5
• Treated nets: areas with API ≥2

Integrated Vector Management (IVM)

• IRS: Primary method in rural settings
• Anti-larval measures: Primary method in urban areas
• ITNs/LLINs: Being scaled up to replace IRS where feasible
• Coverage target: >80% in high-risk areas

High-Endemic States (Focus Areas)

BCC (Behaviour Change Communication)

External Support

1. Global Fund - Intensified Malaria Control Project (IMCP II): Round 9, since Oct 2010, 5 years, in 7 North-Eastern states, 86 districts, 46 million population
2. World Bank - Malaria Control and Kala-azar Elimination Project: 2009-2013

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(B) ELIMINATION OF LYMPHATIC FILARIASIS

• Disease endemic in 256 districts in 16 states and 5 UTs
• ~630 million people exposed to risk of infection
• National Filaria Control Programme (NFCP) operational since 1955
• In June 1978, operational component of NFCP merged with Urban Malaria Scheme
• Training provided at 3 Regional Filaria Training and Research Centres:
  1. Calicut (Kerala)
  2. Rajahmundry (Andhra Pradesh)
  3. Varanasi (Uttar Pradesh)

Key Intervention - Mass Drug Administration (MDA)

• Annual National Filaria Day with mass drug administration
• Drugs: DEC (Diethylcarbamazine) + Albendazole
• MPW's role: Identify lymphoedema/elephantiasis/hydrocele cases, train ASHA drug distributors

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(C) KALA-AZAR (VISCERAL LEISHMANIASIS)

• Transmitted by sand flies (Phlebotomus argentipes)
• MPW activity: Enquire about any fever >15 days duration from every family; enquire about any guest or family member with such fever; guide suspected cases to PHC/CHC; health education

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(D) JAPANESE ENCEPHALITIS (JE)

• Surveillance: From each family, enquire about fever with symptoms of encephalitis
• Guide suspected cases to nearest PHC/CHC
• Maintain record of all JE cases for follow-up
• Vaccination: Component of NVBDCP's supportive interventions
• Following 2005 Gorakhpur outbreak, NVBDCP developed surveillance guidelines; all JE cases reported under Acute Encephalitis Syndrome (AES)

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(E) DENGUE

• Vector: Aedes aegypti (urban areas mainly)
• Control overlaps with malaria control activities in many urban areas
• IVM includes anti-larval measures specific to container-breeding mosquitoes

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(F) CHIKUNGUNYA

• Re-emerged after >3 decades as epidemic outbreaks
• Vector control same as dengue (Aedes aegypti)
• Integrated under NVBDCP framework

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INTER-SECTORAL CONVERGENCE UNDER NVBDCP

1. Other VBDs: Dengue + malaria (urban); malaria + kala-azar (Jharkhand districts); malaria + filariasis (Odisha)
2. Reproductive and Child Health: LLINs distributed to pregnant women through ANC; Janani Suraksha Yojana makes provision for bed-net distribution; malaria norms included in IMNCI

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ROLE OF HEALTH WORKER (MPW - Male) UNDER NVBDCP

• Collect thick and thin blood smears from febrile cases
• Contact ASHAs and FTDs during fortnightly village visits; collect blood smears; replenish drugs, slides, and RDKs
• Dispatch blood smears with MF-2 to PHC lab twice a week
• Verify RDK results and radical treatment by ASHAs
• Administer radical treatment to positive cases per drug schedule
• Inform spray dates; assist in supervising spray operations

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Park's Textbook of Preventive and Social Medicine - Chapter on National Health Programmes; NVBDCP section (pp. 468-476, Block 6)

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NVBDCP - MALARIA

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INTRODUCTION

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MILESTONES OF MALARIA CONTROL IN INDIA

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ADMINISTRATIVE STRUCTURE

• Laboratories decentralized to PHC level
• District Vector Borne Disease Control Societies (merged with District Health Societies under NRHM) manage funds and planning

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THREE-PRONGED STRATEGY

(i) Disease Management

• Early case detection and complete treatment
• Strengthening referral services
• Epidemic preparedness and rapid response

(ii) Integrated Vector Management (IVM)

• IRS (Indoor Residual Spray) - primary method in rural areas
• Anti-larval measures - primary method in urban areas
• ITNs / LLINs - scaled up to eventually replace IRS
• Larvivorous fish, environmental engineering, source reduction

(iii) Supportive Interventions

• Behaviour Change Communication (BCC)
• Capacity building / Human resource development
• Operational research (drug resistance, insecticide susceptibility)
• Web-based Management Information System
• Public-private partnerships, inter-sectoral convergence

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NATIONAL FRAMEWORK FOR MALARIA ELIMINATION 2016-2030

Phase-wise Targets

District Categorization for Elimination

Sub-Centre Level Stratification by API

• API ≥5: Coverage by LLINs
• API ≥2: Coverage by conventionally treated nets
• Coverage target: >80% by whichever intervention is used

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SURVEILLANCE

Active Case Detection (ACD)

• Carried out in rural areas by MPWs/ANMs
• Blood smears collected during fortnightly house visits

Passive Case Detection (PCD)

• Fever cases reporting to:
  • Peripheral health volunteers / ASHAs (RDT-based diagnosis)
  • Sub-centres, malaria clinics, CHCs
  • Secondary and tertiary hospitals

Key Surveillance Facts

• ABER (Annual Blood Examination Rate): Maintained at ~10% nationally
• Microscopy: Gold standard - high sensitivity, specificity, economical in field settings
• RDTs: Introduced 2003; bivalent RDTs (P. vivax + P. falciparum) introduced 2012
• Sentinel surveillance: 1-3 sentinel sites per high-endemic district in large hospitals for recording all outpatient/inpatient malaria cases and deaths
• National reference laboratory: Set up for confirmation; 100% cases notified post-elimination in each State; real-time SMS/e-mail reporting of all positives

Focus Area Surveillance (Elimination Phase)

1. Complete case notification made mandatory
2. All positive cases confirmed at reference lab
3. Focus investigation for each positive case
4. Reactive case detection in surrounding households
5. Monitoring migrant populations and industrial area populations
6. Surveillance of special groups (school children, workplace colleagues, neighbours)

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CASE MANAGEMENT

• No presumptive treatment since Drug Policy 2013
• Diagnosis confirmation mandatory before treatment

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DRUG DISTRIBUTION CENTRES (DDCs) AND FEVER TREATMENT DEPOTS (FTDs)

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URBAN MALARIA SCHEME

• Launched 1971 to reduce/interrupt urban malaria
• Currently protects 130 million population in 131 towns in 19 States/UTs
• Urban malaria = 7.4% of total cases and 10.9% of deaths
• Vector breeds in man-made containers: overhead tanks, coolers, tyres, cisterns, flower vases
• Major cities affected: Chennai, Vadodara, Visakhapatnam, Ahmedabad, Kolkata, Mumbai, Vijayawada
• Control: anti-larval measures, larvivorous fish, civil bye-laws, larvicides
• Civic bye-laws enacted in Delhi, Mumbai, Kolkata, Chandigarh, Bengaluru, Chennai, Ahmedabad

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SPECIAL STRATEGY FOR P. VIVAX ELIMINATION

1. Hypnozoites prolong parasite lifespan and are undetectable by RDT
2. RDTs for P. vivax are less sensitive than for P. falciparum
3. Requires 14-day primaquine therapy (vs. 3 days for P. falciparum)
4. Longer incubation period

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HIGH-ENDEMIC FOCUS STATES

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BCC (BEHAVIOUR CHANGE COMMUNICATION)

• (a) Early recognition of malaria signs/symptoms
• (b) Early treatment seeking from appropriate provider
• (c) Adherence to treatment regimens
• (d) Protection of children and pregnant women
• (e) Use of ITNs/LLINs
• (f) Acceptance of IRS

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KEY INDICATORS TO MONITOR PROGRESS (Table 2 of National Framework)

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INTERACTION WITH OTHER PROGRAMMES

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EXTERNAL SUPPORT

1. Global Fund - IMCP II: Round 9, since Oct 2010, 7 North-Eastern states, 86 districts, 46 million population - strategy: early diagnosis + ACT + ITN/LLIN promotion
2. World Bank - Malaria Control & Kala-azar Elimination Project: 2009-2013
3. World Bank - Enhanced Malaria Control Project (EMCP): 1997

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ROLE OF MPW (Male) - MALARIA DUTIES

1. Collect thick + thin blood smears from all febrile cases on one glass slide
2. Fortnightly visits - collect blood smears from ASHAs/FTDs; replenish drugs, slides, RDKs; check consumption accounts
3. Dispatch blood smears with MF-2 form to PHC lab twice a week
4. Verify RDK results and radical treatment given by ASHA/FTD
5. Administer radical treatment to positive cases per drug schedule; watch for primaquine toxicity
6. Inform spray dates; motivate community for spray acceptance
7. Assist Health Supervisor in supervising spray operations and training of spray staff

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• The full Milestones table (a favourite in exams)
• The Phase-wise targets of the 2016-2030 Framework with exact years and percentages
• The full Category 0, 1, 2, 3 classification with API values
• Full Surveillance detail (ACD vs PCD, ABER, sentinel sites, reference lab)
• The P. vivax special challenges and strategy
• The Anti-Malaria Month (June)
• The Key Indicators table
• All External Projects with details
• The full MPW duties list

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[TOPIC] - STRICTLY FROM PARK'S TEXTBOOK. It is an LAQ exam question from Community Medicine / Preventive and Social Medicine. Give me a complete, structured, exam-ready LAQ answer covering ALL of the following without missing anything:

1. Introduction + Definition
2. Historical background / Milestones (with years and exact figures)
3. Objectives of the programme
4. Administrative / Organisational structure (Central → State → District → PHC → Community level)
5. Strategies (all sub-strategies with full detail)
6. Phase-wise targets / Goals (with exact years, numbers, percentages)
7. Surveillance (ACD, PCD, indicators, tools)
8. Case management / Treatment (drug names, dosages, schedules)
9. Vector control measures (IRS, ITNs, LLINs, anti-larval - full detail)
10. Special strategies / Challenges
11. BCC (Behaviour Change Communication)
12. Role of Health Worker (MPW/ASHA duties - point by point)
13. Interaction with other health programmes
14. External support / Funding agencies
15. Key indicators / Monitoring and Evaluation
16. Current status / Achievements

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"Do NOT summarise. Give every sub-point in full. Include all tables, figures, classifications, and named criteria exactly as they appear in Park's. This is for a university long answer question worth 10-15 marks."

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What Edition is Loaded?

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What This Means for You

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What You Should Do

• The NVBDCP malaria section, drug policies, milestones, strategies - all identical in both editions
• Safe for 95% of LAQ content

• Open your physical 28th edition
• Check pages around the NVBDCP/National Health Programmes chapter for any updated statistics or new schemes added
• The chapter structure will be identical - just read the updated numbers

• Add this line to any prompt: "Strictly from Park's 26th/28th edition - give exact text, not paraphrased"
• I will pull the exact sentences from the 26th edition text as loaded

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