1 / 26

WATER & HEALTH: MICROBIAL RISKS

WATER & HEALTH: MICROBIAL RISKS. Irina Cech Ph.D. Objectives:. Describe major health problems associated with polluted drinking water. Describe major health and ecological risks in the coastal zone Describe basic principles and methods of making water potable.

triage
Download Presentation

WATER & HEALTH: MICROBIAL RISKS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. WATER & HEALTH: MICROBIAL RISKS Irina Cech Ph.D.

  2. Objectives: • Describe major health problems associated with polluted drinking water. • Describe major health and ecological risks in the coastal zone • Describe basic principles and methods of making water potable. • Describe basic principles and methods of treating sewage. • Describe the difference between water quality criteria and water quality standards. • Describe fundamentals of surface and groundwater protection. • Describe the limiting factors for land disposal of hazardous wastes.

  3. Microorganism, Vibrio 

  4. @Irina Cech

  5. Waterborne Infectious Disease • Methods of preventing waterborne infectious disease are in part a matter of technology and expense. Credit: Bertram W. Roberts

  6. @Irina Cech

  7. Average Age-Adjusted Rate of Salmonellosis by Age Group, Texas 2000-2004 Credit: Jennifer Steinhausen, MPH thesis, SPH 2008

  8. Average Age-Adjusted Rate of Shigellosis by Age Group, Texas 2000-2004 Credit: Jennifer Steinhausen, MPH thesis, SPH 2008

  9. Giardia lamblia

  10. Toxoplasmosis: Causal agent Toxoplasma gondii

  11. Pregnant women who develop toxoplasmosis usually have few symptoms •The fetus shows CNS necrosis usually about the ventricles. Note that the cerebral hemispheres are almost completely destroyed except for the temporal lobes. •Toxoplasmosis infection is a danger to developing fetuses and to patients with AIDS. BrainCT Image Contrib. by:Melinda Sanders, M.D

  12. Free-living amebic infections • Naegleria fowleri trophozoites, cultured from cerebrospinal fluid (from a patient who died from primary amebic meningo-encephalitis in Virginia).

  13. Poliomyelitis virus (Paralysis, Meningitis, Fever, Poliomyelitis) Coxsackie A Virus (Meningitis, Respiratory infection, Herpangina) Coxsackie B Virus (Myocarditis, Rash, Fever, Meningitis, Respiratory Infection, Pleurodynia) EXAMPLES OF HUMAN PATHOGENIC VIRUSES FOUND IN AQUATIC ENVIRONMENTS • Echovirus • (Meningitis, Respiratory infection, Rash, Fever, Diarrhoea) • Enterovirus 68 to 71 • Meningitis, Encephalitis, Respiratory conditions, Haemorrhagic conjunctivitis) • Hepatitis A virus • (Infectious hepatitis)

  14. Human reoviruses Human rotaviruses Human caliciviruses Norwalk virus Small round virus Hepatitis E virus Human astroviruses Parvovirus-like virus (H.F.P.L.V.) Human coronavirus Coronavirus-like Human adenoviruses Gastro-enteritis Gastro-enteritis Gastro-enteritis Gastro-enteritis Gastro-enteritis Gastro-enteritis Infectious hepatitis Gastro-enteritis Gastro-enteritis Gastro-enteritis Gastro-enteritis Enterocolitis Respiratory infection, conjunctivitis & gastro-enteritis OTHER HUMAN PATHOGENIC VIRUSES FOUND IN AQUATIC ENVIRONMENTS

  15. Microfilaria of Onchocerca volvulus @Irina Cech

  16. @Irina Cech, NTD project

  17. @Irina Cech

More Related