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Water-borne Pathogens. More than just diarrhea. What kind of Pathogens can we find in water. Virus (indirect by mulitplication of mosquitos- Dengue and Yellow Fever) Bacterial Typhoid Fever Cholera Protozoal Entamoeba (Ameboid dysentary) Giardia Cryptosporidium.

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water borne pathogens

Water-borne Pathogens

More than just diarrhea

what kind of pathogens can we find in water
What kind of Pathogens can we find in water
  • Virus (indirect by mulitplication of mosquitos- Dengue and Yellow Fever)
  • Bacterial
    • Typhoid Fever
    • Cholera
  • Protozoal
    • Entamoeba (Ameboid dysentary)
    • Giardia
    • Cryptosporidium
what water is safe to drink
What water is safe to drink?
  • Ocean Water?
  • Lake/Pond Water?
  • Pristine Mountain Stream Water?
why we don t drink lake pond water
Why we don’t drink Lake/Pond Water
  • Chemical Run-off
  • Direct dumping of pollutants
  • Sewage
  • Microbes
remember milwaukee cryptosporidium parvum
Remember Milwaukee:Cryptosporidium parvum
  • Single-celled organism whose “egg”stage (oocyst) gets into the water supply in the feces of numerous mammals
  • 1993 Outbreak infected 403,000 residents, 100 died!
  • $96.2 million estimated cost of the outbreak
  • Median sickness time 9 days
  • Median maximal stools per day 12 (range from 1-90)
more cypto facts
More Cypto. facts
  • Milwaukee waste water treatment plant to blame
  • Very small pathogen, 2-6 micrometers
  • Boiling water for 10 minutes is effective
  • Viable oocysts were found in ice cubes!
why not drink rocky mountain spring water
Why not drink Rocky Mountain Spring Water?
  • No human sewage, but what about those critters that live in or near the water?
  • Beaver Fever or Backpackers Revenge!
giardia lamblia
Giardia lamblia
  • Giardiasis is the most frequent cause of non-bacterial diarrhea in the U.S.
  • Dogs, cats, beavers and bears and others appear to carry the same species as humans
  • Acute infections 1-2 weeks
  • Chronic infections- months to years with individuals acting as carriers
giardia cont
Giardia cont.
  • Cysts pass in feces and contaminate water supplies
  • Trophozoite (feeding form) attach to epithelium layer of the small intestine
  • Causes cells to produce large amounts of mucous, hence diarrhea!
  • Common also in nursing homes and daycare centers
diagnosis treatment and prevention
Diagnosis,Treatment and Prevention
  • Diagnosis: The dreaded fecal exam
  • Treatment: Nasty drug known as metronidazole, everyone in the family is treated whether sick or not
  • Prevention: Don’t drink untreated SURFACE water. If you must drink, boil for 10 minutes or buy commercially available filters