The document discusses different types of water-associated diseases: 1. Waterborne diseases are spread through ingestion of water contaminated with feces, including cholera, typhoid, and hepatitis. 2. Water-washed diseases are linked to lack of access to clean water for hygiene and include trachoma, dysentery, and skin infections. 3. Water-based diseases involve pathogens with complex lifecycles using aquatic hosts, such as schistosomiasis spread through snails and Guinea worm through crustaceans. 4. Water-related diseases are spread by insects living near water, including malaria and sleeping sickness.

1. ECOLOGY OF
MICROORGANISMS
&
sanitary microbiology
by:aarushkumar

38. SANITARI
MICROBIOLOGY

39. WATER
• ....Is responsible for ,by some
estimates,approximately of all infectious
diseases not just waterborne but any disease
where water plays a role ....WATER
ASSOCIATED DISEASES

41. 1. There are waterborne diseases,such as cholera
,typhoid,bacillary dysentery,infectious hepatitis;
2. Water-washed diseases,such as trachoma
,scabies,dysentery,louse borne fever;
3. Water-based iseases,such as schistosomiasis,and guinea
worm;
4. Water realted diseases such as malaria,sleeping
sickness,oronchocerciasis

43. WATER-BORNE DISES
• Mainly enteric diseases resulting from the ingestion of
feacally contaminated water .
• In developed countries classical water borne diseases
are mainly low infective dose infections -cholera and
typhoid fever, leptospirosis,virsl infection
;Campilobactor,and Giardia.
• In developed counteries a variety of other high infective
dose diseases can be transmitted via water - infectious
hepatitis, Vibrio infections;bacillary dysentery

44. WATER-WASHED DISEASES
• Diseases linked to water scarcity resultant poor
persional hygiene
• obviously more common in tropical 3rd world countries
where water supplies may be scare
• Intestinal and nonintestinal infections
• Intestinal;Shigella,thoid,giardia,campylobactor
• Non-intestinal;bacterial skin sepsis,scabies,ringworm.

45. WATER-BASED DISEASES
• Disease coused by pathogens that have a complex
lyfecycle which involves intermediate aquatic host
• All of these diseases are caused by worms
;Schistosomiasis caused by Schistosoma worm having
snails as host ,also the Guinea worm having a small
crustacean as an intermediate host

46. WATER-REALATED DISEASES
Diseases caused by pathogens carried by insects that live
near water and act as mechanical vectors
Very difficult to control and diseases are very severe