this presentation in about emerging and re-emerging vector borne diseases and their spatial spread with reference to time, surveillance, monitoring and management program and other difficulties and suggestions for program
3. Infectious diseases are caused by pathogenic
microorganisms, such as bacteria, viruses,
parasites or fungi; the diseases can be spread,
directly or indirectly, from one person to another.
(source: WHO)
TERMINOLOGIES
Re-emerging infectious diseases are diseases that once were
major health problems globally or in a particular country, and
then declined dramatically, but are again becoming health
problems for a significant proportion of the population.
(source: NIH)
An emerging diseases is one that has appeared in a population
for the first time, or that may have existed previously but is
rapidly increasing in incidence or geographic range.
(Source: WHO)
4. INTRODUCTION
• There had been a worldwide explosion of infectious diseases.
• Emerging/Re-emerging diseases are becoming pandemic and
may lead to threat to the stability of nations worldwide.
• As per WHO 2007, World Health Report, more than 40
infectious diseases have been discovered since 1970s.
• Infectious diseases accounted for about 26 percent of 57 million
deaths worldwide in 2002. (source: World Health Report 2004, WHO)
• The driving factors for emergence/re-emergence of infectious
diseases are complex and interrelated.
5. EMERGING VIRUS
YEAR DISEASE COUNTRY
1950 DHF Philipines and Thailand
1947 Zika Uganda
1998,1999 Nipah virus Malaysia,Bangladesh-India
1997 / 2004 Avian Influenza(H5N1) China / Thailand, Vietnam
2003 SARS Coronavirus China
2006 - Influenza H5N1
- New Human Rhinovirus
- Egypt, Iraq
- USA
2007 - LCM like Virus
- Polyoma like virus
- Nipah virus
- Australia
- Australia
- Bangladesh
2009 Influenza H1N1
1944/1969/ 2011 CCHF Crimea / Congo / India
6. RE-EMERGING DISEASES
Plague
West Nile Virus
Yellow fever
Japanese Encephalitis
KFD
Leptospirosis
Scrub Typhus
Chikungunya
Ebola
Marbug HE/HF
Drug resistant malaria
Rift valley fever
7. (Source: Morens D.M., et al. 2004. The Challenge of Emerging and Re-emerging Infectious diseases.
Nature 430: 242-49)
10. OTHER FACTORS INFLUENCING VECTOR BORNE
EMERGING & RE-EMERGING DISEASES
Extreme events
- Disaster and Hazard
- War
Travelling
Urbanization
Population migration
Change in human behavior
Ecological pressure (non vector becoming vector)
Bioterrorism
11. It involves interaction of multiple complex factors between
the host and pathogen, each driven factor need to secure
the success of the species in changing environments.
Adaptation of one partner to exploit new environmental
changes will often stimulate the other to modify its
characteristics to take advantage of the change.
The human encroachment into habitat especially in tropical
regions and interface with wildlife can lead to creation of
“hot spots” for emergence of new pathogens, with a
potential for rapid spread among susceptible human
populations, facilitated by rapid means of travel and
wildlife trafficking.
HOST PATHOGEN RELATIONSHIP
12. The mutation can create the parasite , pathogen
virulent strain, and non vector became vector as
making it infectious to humans, is a common cause of
new illnesses in humans.
CONTINUED…
21. INTEGRATED DISEASE SURVEILLANCE
PROJECT (IDSP)
Launched as pilot project titled National Surveillance Program for
Communicable Diseases (NSPCD) in 1997 in 5 districts & was
coordinated National Institute of Communicable Disease (NICD).
November, 2004: World Bank funded project titled “Integrated
Disease Surveillance Project (IDSP)” was launched.
September, 2007: Weekly reporting of disease alerts/outbreaks
through IDSP by states/UTs initiated.
Nov, 2007: Weekly compilation/summary of outbreak reports was
introduced.
2007-08: IDSP as a part of NRHM.
Feb, 2008: 24X7, toll free call centre (1075)
22. PHASING OF THE IDSP
Phase I (commencing from 2004-05)
Andhra Pradesh, Himachal Pradesh, Karnataka, Madhya
Pradesh, Maharashtra, Uttaranchal, Tamil Nadu, Mizoram &
Kerala
Phase II (commencing from 2005-06)
Chhatisgarh, Goa, Gujarat, Haryana, Rajasthan, West Bengal,
Manipur, Meghalaya, Orissa Tripura, Chandigarh, Pondicherry,
Delhi
Phase III (commencing from 2006-07)
Uttar Pradesh, Bihar, Jammu & Kashmir, Jharkhand, Punjab,
Arunachal Pradesh, Assam, Nagaland, Sikkim, A & N Nicobar,
D & N Haveli, Daman & Diu, Lakshdweep
23. OBJECTIVES OF IDSP
To integrate, coordinate and decentralize surveillance activities
Undertake surveillance for limited number of health conditions
and risk factors
To establish system for quality data collection, reporting,
analysis and feedback using IT
To improve laboratory support for disease surveillance
To develop human resource for disease surveillance
To involve all stake holders including those in private sector
and communities
24. ADMINISTRATIVE STRUCTURE OF IDSP
NATIONAL SURVEILLANCE COMMITTEE
(CENTRAL SURVEILLANCE UNIT)
STATE SURVEILLANCE COMMITTEE
(STATE SURVEILLANCE UNIT)
DISTRICT SURVEILLANCE COMMITTEE
(DISTRICT SURVEILLANCE UNIT)
25. GLOBAL OUTBREAK ALEART & RESPONSE
NETWORK (GOARN)
Coordinated by WHO and was established in 2000.
Mechanism for combating international disease outbreaks
Ensure rapid deployment of technical assistance, contribute to long-
term epidemic preparedness & capacity building
Surveillance at national, regional, global level
- epidemiological
- laboratory
- ecological
- anthropological
Investigation and early control measures
Implementation of preventive measures
Monitoring and evaluation
26. INTERNATIONAL HEALTH REGULATIONS
(IHR)
This legally-binding agreement.
It significantly contributes to global public health
security.
providing a new framework for the coordination
of the management of events that may constitute
a public health emergency of international
concern.
improve the capacity of all countries to detect,
assess, notify and respond to public health
threats.
27. CONTINUED…
PURPOSE:
To prevent, control and protect against the international spread of
diseases.
Restricted to public health risks, and avoid unnecessary
interference with international traffic and trade.
Aim:
Strengthening national capacity for surveillance and control,
including in travel and transport.
Prevention, alert and response to international public health
emergencies.
Global partnership and international collaboration.
Rights, obligations and procedures, and progress monitoring.
28. CONTINUED…
Updates:
From three diseases to all public health threats.
From preset measures to adapted response.
From control of borders to, also, containment at source.
Scope has been expanded from cholera, plague and yellow
fever to all public health emergencies of international
concern (PHEIC)
29. Poor implementation
Poor surveillance and monitoring
Limited range of drugs and insecticides
Inadequate dosage of drugs and insecticides
Lack of treatment for some VBDs
Lack of dependable vaccine candidate for immunization
Inadequate funding
Insecticide resistance/Drug resistance
Inadequate skilled man power
Low community acceptance
Difficult to change human behavior
Lack of political will
PROBLEMS LEAD TO FAILURE OF VBD
CONTROL PROGRAM
30. PREVENTION & CONTROL OF EMERGING
INFECTIOUS DISEASES WILL REQUIRE
ACTION IN EACH OF THESE AREAS
Surveillance and Response
Ensure political support
Applied Research
Infrastructure and Training
Prevention and Control
Strict legislation
Increase global collaboration
31. continued….
Vaccination for all
Enhanced communication with and within the Heath
department: locally, regionally, nationally and globally
Judicial use of antibiotics
strengthen IEC and BCC activities
32. REFERENCES
Dikid, T. and et al. "Emerging and Re-emerging Infections in
India: An overview." INDIAN J RES MED 138 (JULY 2013): 19-31
Gupta, Sanjeev K and et al. "Emerging and Re-emerging
Infectious Diseases, Future Challenges and Strategy." Journal of
Clinical and Diagnostic Research, Vol-6(6) (August, 2012): 1095-
1100.
Jane, P. Messina and et al. "Global spread of dengue virus types:
mapping the 70 year history." Trends in Microbiology (March
2014): Vol. 22, No. 3., pgg: 139-146.
Lim, Victor K E. "Emerging and Re-emerging infections." leJSME
7(Suppl 1) (2013): S51-56.
Morens, D M. and Folker, G K. “The Challenge of Emerging and
Re-emerging Infectious Disease.” The Nature, 2004.
WHO. INTERNATIONAL HEALTH REGULATIONS . WHO Library
Cataloguing-in-Publication Data, 2005
www.idsp.nic.in
Editor's Notes
In addition to this, infectious diseases account for 30.7 percent loss of DALYs(disability adjusted life years) which reflects the number of healthy years lost to illness.
Hemagglutinin type and Neuraminidase Type
SARS- Severe Acute Respiratory Syndrome
Lymphocytic choriomeningiitis virus, Arenaviridae
Crimea: 1944
Congo: 1969
WNV: Uganda,1937
Yellow fever: tropical & subtropical areas in south America & Africa
KFD: March 1957, karnatka Shimoga
Scrub typhus: 1930, Japan
Ebola virus: 1976, Russia
MHF: 1967, south africa
RVF: 1910/ outbreak -2000, Africa MadagascarSaudi Arabia, Yemen