39721 - Emerging & Re-emerging Infectious...

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Unformatted text preview: Emerging & Re-emerging Infectious Diseases Dr. KANUPRIYA CHATURVEDI Dr. KANUPRIYA CHATURVEDI Outline Of Presentation Infectious diseases- trends Definition of emerging & re-emerging diseases Factors contributing to emergence Examples Public health response Dr. KANUPRIYA CHATURVEDI Infectious Disease- Trends Receded in Western countries 20 th century Urban sanitation, improved housing, personal hygiene, antisepsis & vaccination Antibiotics further suppressed morbidity & mortality Dr. KANUPRIYA CHATURVEDI Infectious Disease- Trends Since last quarter of 20 th century- New & Resurgent infectious diseases Unusually large number- Rotavirus, Cryptosporidiosis, HIV/AIDS, Hantaviraus, Lyme disease, Legionellosis, Hepatitis C Dr. KANUPRIYA CHATURVEDI ? ? AIDS AIDS Avian Influenza Avian Influenza Ebola Ebola Marburg Marburg Cholera Cholera Rift Valley Fever Rift Valley Fever Typhoid Typhoid Tuberculosis Tuberculosis Leptospirosis Leptospirosis Malaria Malaria Chikungunya Chikungunya Dengue Dengue JE JE Antimicrobial resistance Antimicrobial resistance UP UP Guinea worm Smallpox Yaws Poliomyelitis Measles Leprosy Neonatal tetanus DOWN DOWN Infectious Diseases: A World in Transition Infectious Diseases: A World in Transition Dr. KANUPRIYA CHATURVEDI Definition Emerging infectious disease Newly identified & previously unknown infectious agents that cause public health problems either locally or internationally Dr. KANUPRIYA CHATURVEDI Definition Re-emerging infectious disease Infectious agents that have been known for some time, had fallen to such low levels that they were no longer considered public health problems & are now showing upward trends in incidence or prevalence worldwide Dr. KANUPRIYA CHATURVEDI Factors Contributing To Emergence AGENT Evolution of pathogenic infectious agents (microbial adaptation & change) Development of resistance to drugs Resistance of vectors to pesticides Dr. KANUPRIYA CHATURVEDI Factors Contributing To Emergence HOST Human demographic change (inhabiting new areas) Human behaviour (sexual & drug use) Human susceptibility to infection (Immunosuppression) Poverty & social inequality Dr. KANUPRIYA CHATURVEDI Factors Contributing To Emergence ENVIRONMENT Climate & changing ecosystems Economic development & Land use (urbanization, deforestation) Technology & industry (food processing & handling) Dr. KANUPRIYA CHATURVEDI CONTD....
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39721 - Emerging & Re-emerging Infectious...

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